Notes Illustrating the Military Geography of the United States, 1813–1880

By Raphael P. Thian and Robert M. Utley

When the Adjutant General's Office published Raphael Thian's "notes" on U.S. military geography in 1880, it produced an invaluable research tool for generations of military historians to come. In this single documented reference volume, Chief Clerk Thian traced the confusing mutations through which the divisions, departments, and districts of the Army's command had evolved since 1813.

The volume is divided into three parts, beginning with the names of the United States Army Continental Commands, the date and authority for their creation, location of the headquarters, geographical changes and discontinuances, and other details including the geographical boundaries embracing each division, department, and district. Part II is filled with background information on states and territories, and Part III lists the maps contained in The Military Atlas of the United States.

The Addenda to this edition expand and update Thian's work. Notes made by Francis B. Heitman to keep his personal copy current are included, as is the Memorandum published by the government in 1906. This addition lists all changes from 1898 through 1905.

• Language: English
• Publisher: Open Road Integrated Media
• Release date: Dec 15, 2014
• ISBN: 9781477306451

Book preview

PART I.

MILITARY DIVISIONS, DEPARTMENTS, DISTRICTS, AND RECONSTRUCTION DISTRICTS,

GIVING

DATE OF CREATION, NAMES OF COMMANDERS, AND GEOGRAPHICAL BOUNDARIES.

1813-1880.

CHRONOLOGICAL EXHIBIT OF MILITARY COMMANDS.

(Divisions and departments in italics or designated by figures in antique (black) are new creations.

MARCH 19, 1813.

Military districts Nos. 1, 2, 3, 4, 5, 6, 7, 8, and 9.

JULY 2, 1814.

Military districts Nos. 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10.

MAY 17, 1815.

Division of the North.—Departments Nos. 1, 2, 3, 4, and 5.

Division of the South.—Departments Nos. 6, 7, 8, and 9.

MAY 17, 1821.

Eastern and Western Departments.

MAY 19, 1837.

Eastern Division.—Departments Nos. 3, 4, 5, 6, and 7.

Western Division.—Departments Nos. 1 and 2.

SEPTEMBER 1, 1841.

EASTERN DIVISION.—Departments Nos. 3, 4, 5, and 6.

WESTERN DIVISION.—Departments Nos. 1, 2, and 7.

JULY 12, 1842.

Departments Nos. 1, 2, 3, 4, 5, 6, 7, 8, and 9.

APRIL 20, 1844.

Eastern Division.—Departments Nos. 5, 6, 7, and 8.

Western Division.—Departments Nos. 1, 2, and 3.

Departments Nos. 4 and 9.

SEPTEMBER 14, 1845.

EASTERN DIVISION.—Departments Nos. 5, 6, 7, and 8.

WESTERN DIVISION.—Departments Nos. 1, 2, and 3.

Department No. 4.

NOVEMBER 3, 1846.

EASTERN DIVISION.—Departments Nos. 5, 6, 7, and 8.

WESTERN DIVISION.—Departments Nos. 1, 2, and 3.

Departments Nos. 4, 9, and 10.

AUGUST 31, 1848.

EASTERN DIVISION.—Departments Nos. 1, 2, 3, and 4.

WESTERN DIVISION.—Departments Nos. 5, 6, 7, 8, and 9.

Departments Nos. 10 and 11.

OCTOBER 10, 1848.

EASTERN DIVISION.—Departments Nos. 1, 2, 3, and 4.

WESTERN DIVISION.—Departments Nos. 5, 6, 7, 8, and 9.

Pacific Division.—Departments Nos. 10 and 11.

MAY 17, 1851.

EASTERN DIVISION.—Departments Nos. 3 and 4.

WESTERN DIVISION.—Departments Nos. 6, 7, 8, and 9.

PACIFIC DIVISION.

MARCH 8, 1852.

EASTERN DIVISION.—Departments Nos. 3 and 4.

WESTERN DIVISION.—Departments Nos. 5, 6, 7, 8, and 9.

PACIFIC DIVISION.

AUGUST 14, 1852.

EASTERN DIVISION.—Departments Nos. 1, 3, and 4.

WESTERN DIVISION.—Departments Nos. 5, 6, 7, 8, and 9.

PACIFIC DIVISION.

OCTOBER 25, 1852.

EASTERN DIVISION,—Departments Nos. 1, 3, and 4.

WESTERN DIVISION.—Departments Nos. 6, 7, 8, and 9.

PACIFIC DIVISION.

OCTOBER 31, 1853.

Departments of the East, New Mexico, Pacific, Texas, and West.

MARCH 27, 1856.

Departments of the East, Florida, New Mexico, Pacific, Texas, and West.

JANUARY 1, 1858.

Departments of the East, Florida, New Mexico, Pacific, Texas, Utah, and West.

MARCH 27, 1858.

Departments of the East, Florida, New Mexico, Pacific, Platte, Texas, Utah, and West.

AUGUST 1, 1858.

Departments of the East, New Mexico, Pacific, Platte, Texas, Utah, and West.

SEPTEMBER 13, 1858.

Departments of California, East, New Mexico, Oregon, Platte, Texas, Utah, and West.

MAY 16, 1859.

Departments of California, East, New Mexico, Oregon, Texas, Utah, and West.

JANUARY 15, 1861.

Departments of the East, New Mexico, Pacific, Texas, Utah, and West.

APRIL 9, 1861.

Departments of the East, New Mexico, Pacific, Texas, Utah, Washington, and West.

APRIL 27, 1861.

Departments of Annapolis, East, New Mexico, Pacific, Pennsylvania, Texas, Utah, Washington, and West.

MAY 3, 1861.

Departments of Annapolis, East, New Mexico, Ohio, Pacific, Pennsylvania, Texas, Utah, Washington, and West.

MAY 22, 1861.

Departments of Annapolis, East, New Mexico, Ohio, Pacific, Pennsylvania, Texas, Utah, Virginia, Washington, and West.

MAY 27, 1861.

Departments of Annapolis, East, New Mexico, Ohio, Pacific, Pennsylvania, Texas, Utah, Virginia, Northeast Virginia, Washington, and West.

MAY 28, 1861.

Departments of Annapolis, East, Kentucky, New Mexico, Ohio, Pacific, Pennsylvania, Texas, Utah, Virginia, Northeast Virginia, Washington, and West.

JULY 3, 1861.

Departments of Annapolis, East, Kentucky, Ohio, Pacific, Pennsylvania, Virginia, Northeast Virginia, Washington, and Western.

JULY 19, 1861.

Departments of the East, Kentucky, Maryland, Ohio, Pacific, Pennsylvania, Shenandoah, Virginia, Northeast Virginia, Washington, and Western.

JULY 25, 1861.

Division of the Potomac.—Northeast Virginia and Washington.

Departments of the East, Kentucky, Ohio, Pacific, Pennsylvania, Shenandoah, Virginia, and Western.

AUGUST 15, 1861.

DIVISION OF THE POTOMAC.—Northeast Virginia and Washington.

Departments of the Cumberland, East, Ohio, Pacific, Pennsylvania, Shenandoah, Virginia, and Western.

AUGUST 17, 1861.

Departments of the Cumberland, East, Ohio, Pacific, Potomac, Virginia, and Western.

SEPTEMBER 19, 1861.

Departments of the Cumberland, East, Ohio, Pacific, Potomac, Virginia, Western Virginia, and Western.

OCTOBER 1, 1861.

Departments of the Cumberland, East, New England, Ohio, Pacific, Potomac, Virginia, Western Virginia, and Western.

OCTOBER 26, 1861.

Departments of the Cumberland, New England, New York, Ohio, Pacific, Potomac, Virginia, Western Virginia, and Western.

NOVEMBER 9, 1861.

Departments of Kansas, Missouri, New England, New Mexico, New York, Ohio, Pacific, Potomac, Virginia, and Western Virginia.

JANUARY 7, 1861.

Departments of Kansas, Missouri, New England, New Mexico, New York, North Carolina, Ohio, Pacific, Potomac, Virginia, and Western Virginia.

JANUARY 11, 1862.

Departments of Kansas, Key West, Missouri, New England, New Mexico, New York, North Carolina, Ohio, Pacific, Potomac, Virginia, and Western Virginia.

FEBRUARY 20, 1862.

Departments of Kansas, Key West, Missouri, New Mexico, New York, North Carolina, Ohio, Pacific, Potomac, Virginia, aud Western Virginia.

FEBRUARY 23, 1862.

Departments of the Gulf, Kansas, Key West, Missouri, New Mexico, New York, North Carolina, Ohio, Pacific, Potomac, Virginia, and Western Virginia.

MARCH 11, 1862.

Departments of the Gulf, Key West, Mississippi, Mountain, New Mexico, New York, North Carolina, Pacific, Potomac, and Virginia.

MARCH 15, 1862.

Departments of the Gulf, Mississippi, Mountain, New Mexico, New York, North Carolina, Pacific, Potomac, South, and Virginia.

MARCH 22, 1862.

Departments of the Gulf, Middle, Mississippi, Mountain, New Mexico, New York, North Carolina, Pacific, Potomac, South, and Virginia.

APRIL 4, 1862.

Departments of the Gulf, Middle, Mississippi, Mountain, New Mexico, New York, North Carolina, Pacific, Potomac, Rappahannock, Shenandoah, South, and Virginia.

MAY 2, 1862.

Departments of the Gulf, Kansas, Middle, Mississippi, Mountain, New Mexico, New York, North Carolina, Pacific, Potomac, Rappahannock, Shenandoah, South, and Virginia.

JUNE, 26, 1862.

Departments of the Gulf, Kansas, Middle, Mississippi, New Mexico, New York, North Carolina, Pacific, Potomac, South, and Virginia.

AUGUST 19, 1862.

Departments of the Gulf, Kansas, Middle, Mississippi, New Mexico, New York, North Carolina, Ohio, Pacific, Potomac, South, and Virginia.

SEPTEMBER 6, 1862.

Departmeiite of the Gulf, Kansas, Middle, Mississippi, New Mexico, New York, North Carolina, Northwest, Ohio, Pacific, Potomac, South, and Virginia.

SEPTEMBER 19, 1862.

Departments of the Gulf, Middle, Missouri, New Mexico, New York, North Carolina, Northwest, Ohio, Pacific, Potomac, South, and Virginia.

OCTOBER 16, 1862.

Departments of the Gulf, Middle, Missouri, New Mexico, New York, North Carolina, Northwest, Ohio, Pacific, Potomac, South, Tennessee, and Virginia.

OCTOBER 24, 1862.

Departments of the Cumberland, Gulf, Middle, Missouri, New Mexico, New York, North Carolina, Northwest, Ohio, Pacific, Potomac, South, Tennessee, and Virginia.

JANUARY 3, 1863.

Departments of the Cumberland, East, Gulf, Middle, Missouri, New Mexico, North Carolina, Northwest, Ohio, Pacific, Potomac, South, Tennessee, and Virginia.

FEBRUARY 2, 1863.

Departments of the Cumberland, East, Gulf, Middle, Missouri, New Mexico, North Carolina, Northwest, Ohio, Pacific, Potomac, South, Tennessee, Virginia, and Washington.

JUNE 9, 1863.

Departments of the Cumberland, East, Gulf, Middle, Missouri, Monongahela, New Mexico, North Carolina, Northwest, Ohio, Pacific, Potomac, South, Susquehanna, Tennessee, Virginia, and Washington.

JUNE 24, 1863.

Departments of the Cumberland, East, Gulf, Middle, Missouri, Monongahela, New Mexico, North Carolina, Northwest, Ohio, Pacific, Potomac, South, Susquehanna, Tennessee, Virginia, Washington, and West Virginia.

JULY 15, 1863.

Departments of the Cumberland, East, Gulf, Middle, Missouri, Monongahela, New Mexico, Northwest, Ohio, Pacific, Potomac, South, Susquehanna, Tennessee, Virginia and North Carolina, Washington, and West Virginia.

OCTOBER 16, 1863.

Division of the Mississippi.—Cumberland, Ohio, and Tennessee.

Departments of the East, Gulf, Middle, Missouri, Monongahela, New Mexico, Northwest, Pacific, Potomac, South, Susquehanna, Virginia and North Carolina, Washington, and West Virginia.

JANUARY 1, 1864.

DIVISION OF THE MISSISSIPPI.—Cumberland, Ohio and Tennessee, East. Gulf, Kansas, Middle, Missouri, Monongahela, New Mexico, Northwest, Pacific, Potomac, South, Susquehanna, Virginia and North Carolina, Washington, and West Virginia.

JANUARY 6, 1864.

DIVISION OF THE MISSISSIPPI.—Cumberland, Ohio, and Tennessee.

Departments of Arkansas, East, Gulf, Kansas, Middle, Missouri, Monongahela, New Mexico, Northwest, Pacific, Potomae, South, Susquehanna, Virginia and North Carolina, Washington, and West Virginia.

JANUARY 12, 1864.

DIVISION OF THE MISSISSIPPI.—Cumberland, Ohio, and Tennessee.

Departments of Arkansas, East, Gulf, Kansas, Middle, Missouri, Monongahela, New Mexico, Northern, Northwest, Pacific, Potomac, South, Susquehanna, Virginia and North Carolina, Washington, and West Virginia.

APRIL 6, 1864.

DIVISION OF THE MISSISSIPPI.—Cumberland, Ohio, and Tennessee.

Departments of Arkansas, East, Gulf, Kansas, Middle, Missouri, New Mexico, Northern, Northwest, Pacific, Potomac, South, Susquehanna, Virginia and North Carolina, Washington, and West Virginia.

MAY 7, 1864.

DIVISION OF THE MISSISSIPPI.—Cumberland, Ohio, and Tennessee.

Division of West Mississippi.—Arkansas and Gulf.

Departments of the East, Kansas, Middle, Missouri, New Mexico, Northern, Northwest, Pacific, Potomac, South, Susquehanna, Virginia and North Carolina, Washington, and West Virginia.

MAY 27, 1864.

DIVISION OF THE MISSISSIPPI.—Cumberland, Ohio, and Tennessee.

DIVISION OF WEST MISSISSIPPI.—Arkansas, Gulf, and Missouri.

Departments of the East, Kansas, Middle, New Mexico, Northern, Northwest, Pacific, Potomac, South, Susquehanna, Virginia and North Carolina, Washington, and West Virginia.

AUGUST 7, 1864.

Middle Military Division.—Middle, Susquehanna, Washington, and West Virginia.

DIVISION OF THE MISSISSIPPI.—Cumberland, Ohio, and Tennessee.

DIVISION OF WEST MISSISSIPPI.—Arkansas, Gulf, and Missouri.

Departments of the East, Kansas, New Mexico, Northern, Northwest, Pacific, Potomac, South, and Virginia and North Carolina.

NOVEMBER 28, 1864.

MIDDLE MILITARY DIVISION.—Middle, Susquehanna, Washington, and West Virginia.

DIVISION OF THE MISSISSIPPI.—Cumberland and Ohio.

DIVISION OF WEST MISSISSIPPI.—Arkansas, Gulf, and Missouri.

Departments of the East, Kansas, Mississippi, New Mexico, Northern, Northwest, Pacific, Potomac, South, and Virginia and North Carolina.

DECEMBER 1, 1864.

MIDDLE MILITARY DIVISION.—Middle, Pennsylvania, Washington, and West Virginia.

DIVISION OF THE MISSISSIPPI.—Cumberland and Ohio.

DIVISION OF WEST MISSISSIPPI.—Arkansas, Gulf, and Missouri.

Departments of the East, Kansas, Mississippi, New Mexico, Northern, Northwest, Pacific, Potomac, South, and Virginia and North Carolina.

JANUARY 17, 1865.

MIDDLE MILITARY DIVISION.—Middle, Pennsylvania, Washington, and West Virginia.

DIVISION OF THE MISSISSIPPI.—Cumberland.

DIVISION OF WEST MISSISSIPPI.—Arkansas, Gulf, and Missouri.

Departments of the East, Kansas, Mississippi, New Mexico, Northern, Northwest, Pacific, Potomac, South, and Virginia.

JANUARY 18, 1865.

MIDDLE MILITARY DIVISION.—Middle, Pennsylvania, Washington, and West Virginia.

DIVISION OF THE MISSISSIPPI.—Cumberland and Ohio.

DIVISION OF WEST MISSISSIPPI.—Arkansas, Gulf, and Missouri.

Departments of the East, Kansas, Mississippi, New Mexico, Northern, Northwest, Pacific, Potomac, South, and Virginia.

JANUARY 30, 1865.

MIDDLE MILITARY DIVISION.—Middle, Pennsylvania, Washington, and West Virginia.

DIVISION OF THE MISSISSIPPI.—Cumberland.

DIVISION OF THE MISSOURI.—Missouri and Northwest.

DIVISION OF WEST MISSISSIPPI.—Arkansas and Gulf.

Departments of the East, Mississippi, New Mexico, Northern, Pacific, Potomac, South, and Virginia.

JANUARY 31, 1865.

MIDDLE MILITARY DIVISION.—Middle, Pennsylvania, Washington, and West Virginia.

DIVISION OF THE MISSISSIPPI.—Cumberland and North Carolina.

DIVISION OF THE MISSOURI.—Missouri and Northwest.

DIVISION OF WEST MISSISSIPPI.—Arkansas and Gulf.

Departments of the East, Mississippi, New Mexico, Northern, Pacific, Potomac, South, and Virginia.

FEBRUARY 10, 1865.

MIDDLE MILITARY DIVISION.—Middle, Pennsylvania, Washington, and West Virginia.

DIVISION OF THE MISSISSIPPI.—Cumberland and North Carolina.

DIVISION OF THE MISSOURI.—Missouri and Northwest.

DIVISION OF WEST MISSISSIPPI.—Arkansas, Gulf, and Mississippi.

Departments of the East, Kentucky, New Mexico, Northern, Pacific, Potomac, South, and Virginia.

MARCH 21, 1865.

MIDDLE MILITARY DIVISION.—Middle, Pennsylvania, Washington, and West Virginia.

DIVISION OF THE MISSISSIPPI.—Cumberland and North Carolina.

DIVISION OF THE MISSOURI.—Arkansas, Missouri, and Northwest.

DIVISION OF WEST MISSISSIPPI.—Gulf and Mississippi.

Departments of the East, Kentucky, New Mexico, Northern, Pacific, Potomac, South, and Virginia.

APRIL 19, 1865.

Division of the James.—Virginia and part of North Carolina.

MIDDLE MILITARY DIVISION.—Middle, Pennsylvania, Washington, and West Virginia.

DIVISION OF THE MISSISSIPPI.—Cumberland and part of North Carolina.

DIVISION OF THE MISSOURI.—Arkansas, Missouri, and Northwest.

DIVISION OF WEST MISSISSIPPI.—Gulf and Mississippi.

Departments of the East, Kentucky, New Mexico, Northern, Pacific, Potomac, aud South.

MAY 17, 1865.

DIVISION OF THE JAMES.—Virginia and part of North Carolina.

MIDDLE MILITARY DIVISION.—Middle, Pennsylvania, Washington, and West Virginia.

DIVISION OF THE MISSISSIPPI.—Cumberland and part of North Carolina.

DIVISION OF THE MISSOURI.—Arkansas, Missouri, and Northwest.

Division of the Southwest.

Departments of the East, Gulf, Kentucky, New Mexico, Northern, Pacific, Potomac, and South.

JUNE 27, 1865.

Divition of the Atlantic.—East, Middle, North Carolina, South Carolina, and Virginia.

Division of the Gulf.—Florida, Louisiana, Mississippi, and Texas.

DIVISION OF THE MISSISSIPPI.—Arkansas, Missouri, and Ohio.

Division of the Pacific.—California and Columbia.

Division of the Tennessee.—Alabama, Georgia, Kentucky, and Tennessee.

Department of Washington.

OCTOBER 7, 1865.

DIVISION OF THE ATLANTIC.—East, Middle, North Carolina, South Carolina, and Virginia.

DIVISION OF THE GULF.—Florida, Louisiana, and Texas.

DIVISION OF THE MISSISSIPPI.—Arkansas, Missouri, and Ohio.

DIVISION OF THE PACIFIC.—California and Columbia.

DIVISION OF THE TENNESSEE.—Alabama, Georgia, Kentucky, Mississippi, and Tennessee.

Department of Washington.

MARCH 26, 1866.

DIVISION OF THE ATLANTIC.—East, Middle, North Carolina, South Carolina, and Virginia.

DIVISION OF THE GULF.—Florida, Louisiana, and Texas.

DIVISION OF THE MISSISSIPPI.—Arkansas, Missouri, Ohio, and Platte.

DIVISION OF THE PACIFIC.—California and Columbia.

DIVISION OF THE TENNESSEE.—Alabama, Georgia, Kentucky, Mississippi, and Tennessee.

Department of Washington.

MAY 19, 1866.

DIVISION OF THE ATLANTIC.—Carolinas, East, Middle, and Virginia.

DIVISION OF THE GULF.—Florida, Louisiana, and Texas.

DIVISION OF THE MISSISSIPPI.—Arkansas, Missouri, Ohio, and Platte.

DIVISION OF THE PACIFIC.—California and Columbia.

DIVISION OF THE TENNESSEE.—Kentucky, South, and Tennessee.

Department of Washington.

JUNE 5, 1866.

DIVISION OF THE ATLANTIC.—Carolinas, East, Middle, and Virginia.

DIVISION OF THE GULF.—Florida, Louisiana, and Texas.

DIVISION OF THE MISSISSIPPI.—Arkansas, Missouri, Ohio, and Platte.

DIVISION OF THE PACIFIC.—California and Columbia.

DIVISION OF THE TENNESSEE.—Cumberland and South.

Department of Washington.

AUGUST 6, 1866.

Division of the Missouri.—Arkansas, Missouri, and Platte.

DIVISION OF THE PACIFIC.—California and Columbia.

Departments of the East, Gulf, Lakes, Potomac, South, Tennessee, and Washington.

AUGUST 11, 1866.

DIVISION OF THE MISSOURI.—Arkansas, Dakota, Missouri, and Platte.

DIVISION OF THE PACIFIC.—California and Columbia.

Departments of the East, Gulf, Lakes, Potomac, South, Tennessee, and Washington.

MARCH 11, 1867.

DIVISION OF THE MISSOURI.—Dakota, Missouri, and Platte.

DIVISION OF THE PACIFIC.—California and Columbia.

Departments of the East, Lakes, Washington, and First, Second, Third, Fourth, and Fifth Military Districts.

MARCH 12, 1867.

DIVISION OF THE MISSOURI.—Dakota, Missouri, and Platte.

DIVISION OF THE PACIFIC.—California and Columbia.

Departments of the Cumberland, East, Lakes, Washington, and First, Second, Third, Fourth, and Fifth Military Districts.

FEBRUARY 12, 1868.

Division of the Atlantic.—East, Lakes, and Washington.

DIVISION OF THE MISSOURI.—Dakota, Missouri, and Platte.

DIVISION OF THE PACIFIC.—California and Columbia.

Departments of the Cumberland, and First, Second, Third, Fourth, and Fifth Military Districts.

MARCH 18, 1868.

DIVISION OF THE ATLANTIC.—East, Lakes, and Washington.

DIVISION OF THE MISSOURI.—Dakota, Missouri, and Platte.

DIVISION OF THE PACIFIC.—Alaska, California, and Columbia.

Departments of the Cumberland, and First, Second, Third, Fourth, and Fifth Military Districts.

JULY 28, 1868.

DIVISION OF THE ATLANTIC.—East, Lakes, and Washington.

DIVISION OF THE MISSOURI.—Dakota, Missouri, and Platte.

DIVISION OF THE PACIFIC.—Alaska, California, and Columbia.

Departments of the Cumberland, Louisiana, South, and First, Fourth, and Fifth Military Districts.

MARCH 16, 1869.

DIVISION OF THE ATLANTIC.—East, Lakes, and First Military District.

DIVISION OF THE MISSOURI.—Dakota, Missouri, and Platte.

DIVISION OF THE PACIFIC.—Alaska, California and Columbia.

Division of the South.—Cumberland, Louisiana, South, and Fourth Military District,

Fifth Military District.

JANUARY 29, 1870.

DIVISION OF THE ATLANTIC.—East, Lakes, and Virginia.

DIVISION OF THE MISSOURI.—Dakota, Missouri, and Platte.

DIVISION OF THE PACIFIC.—Alaska, California, and Columbia.

DIVISION OF THE SOUTH.—Cumberland, Louisiana, South and Fourth Military District.

Fifth Military District,

FEBRUARY 26, 1870.

DIVISION OF THE ATLANTIC.—East, Lakes, and Virginia.

DIVISION OF THE MISSOURI.—Dakota, Missouri, and Platte.

DIVISION OF THE PACIFIC.—Alaska, California, and Columbia.

DIVISION OF THE SOUTH.—Cumberland, Louisiana, and South.

Fifth Military District.

MARCH 31, 1870.

DIVISION OF THE ATLANTIC.—East, Lakes, and Virginia.

DIVISION OF THE MISSOURI.—Dakota, Missouri, and Platte.

DIVISION OF THE PACIFIC.—Alaska, California, and Columbia.

DIVISION OF THE SOUTH.—Cumberland, South, and Texas.

APRIL 15, 1870.

DIVISION OF THE ATLANTIC.—East, Lakes, and Virginia.

DIVISION OF THE MISSOURI.—Dakota, Missouri, and Platte.

DIVISION OF THE PACIFIC.—Alaska, Arizona, California, and Columbia.

DIVISION OF THE SOUTH.—Cumberland, South, and Texas.

APRIL 30, 1870.

DIVISION OF THE ATLANTIC.—East and Lakes.

DIVISION OF THE MISSOURI.—Dakota, Missouri, and Platte.

DIVISION OF THE PACIFIC.—Alaska, Arizona, California, and Columbia.

DIVISION OF THE SOUTH.—Cumberland, South, and Texas.

MAY 4, 1870.

DIVISION OF THE ATLANTIC.—East and Lakes.

DIVISION OF THE MISSOURI.—Dakota, Missouri, and Platte.

DIVISION OF THE PACIFIC.—Alaska, Arizona, California, and Columbia.

DIVISION OF THE SOUTH.—South and Texas.

JULY 1, 1870.

DIVISION OF THE ATLANTIC.—East and Lakes.

DIVISION OF THE MISSOURI.—Dakota, Missouri, and Platte.

DIVISION OF THE PACIFIC.—Arizona, California, and Columbia.

DIVISION OF THE SOUTH.—South and Texas.

NOVEMBER 1, 1871.

DIVISION OF THE ATLANTIC.—East and Lakes.

DIVISION OF THE MISSOURI.—Dakota, Missouri, Platte, and Texas.

DIVISION OF THE PACIFIC.—Arizona, California, and Columbia.

DIVISION OF THE SOUTH.—Gulf and South.

JANUARY 15, 1872.

DIVISION OF THE ATLANTIC.—East and Lakes.

DIVISION OF THE MISSOURI.—Dakota, Missouri, Platte, and Texas.

DIVISION OF THE PACIFIC.—Arizona, California, and Columbia.

Departments of the Gulf and South.

NOVEMBER 25, 1872.

DIVISION OF THE ATLANTIC.—East and Lakes.

DIVISION OF THE MISSOURI.—Dakota, Missouri, Platte, and Texas.

DIVISION OF THE PACIFIC.—Arizona, California, and Columbia.

Division of the South.—Gulf and South.

OCTOBER 31, 1873.

DIVISION OF THE ATLANTIC.

DIVISION OF THE MISSOURI.—Dakota, Missouri, Platte, and Texas.

DIVISION OF THE PACIFIC.—Arizona, California, and Columbia.

DIVISION OF THE SOUTH.—Gulf and South.

JANUARY 4, 1875.

DIVISION OF THE ATLANTIC.

DIVISION OF THE MISSOURI.—Gulf, Dakota, Missouri, Platte, and Texas.

DIVISION OF THE PACIFIC.—Arizona, California, and Columbia.

DIVISION OF THE SOUTH.—South.

JUNE 26, 1876.

DIVISION OF THE ATLANTIC.—South.

DIVISION OF THE MISSOURI.—Gulf, Dakota, Missouri, Platte, and Texas.

DIVISION OF THE PACIFIC.—Arizona, California, and Columbia.

MARCH 2, 1877.

DIVISION OF THE ATLANTIC.—South.

DIVISION OF THE MISSOURI.—Gulf, Dakota, Missouri, Platte, and Texas.

DIVISION OF THE PACIFIC.—Arizona, California, and Columbia.

Department of West Point.—(Independent.)

MAY 1, 1877.

DIVISION OF THE ATLANTIC.—Gulf and South.

DIVISION OF THE MISSOURI.—Dakota, Missouri, Platte, and Texas.

DIVISION OF THE PACIFIC.—Arizona, California, and Columbia.

Department of West Point.—(Independent.)

NOVEMBER 8, 1877.

DIVISION OF THE ATLANTIC.—East, Gulf, and South.

DIVISION OF THE MISSOURI.—Dakota, Missouri, Platte, and Texas.

DIVISION OF THE PACIFIC.—Arizona, California, and Columbia.

Department of West Point.—(Independent.)

JULY 1, 1878.

DIVISION OF THE ATLANTIC.—East and South.

DIVISION OF THE MISSOURI.—Dakota, Missouri, Platte, and Texas.

DIVISION OF THE PACIFIC.—Arizona, California, and Columbia.

Department of West Point.—(Independent.)

DECEMBER 18, 1880.

DIVISION OF THE ATLANTIC.—East and South.

Division of the Gulf.—Arkansas and Texas.

DIVISION OF THE MISSOURI.—Dakota, Missouri, and Platte.

DIVISION OF THE PACIFIC.—Arizona, California, and Columbia.

Department of West Point.—(Independent.)

HISTORY OF MILITARY COMMANDS.

DIVISION OF THE ATLANTIC.

June 27, 1865, to August 6, 1866.

June 27, 1885.—To consist of the New England States and the States of New York, New Jersey, Pennsylvania, Delaware, Maryland (except Montgomery County, that part of Anne Arundel County south of the Annapolis and Elk Ridge Railroad, including the city of Aunapolis, and Prince George’s, Calvert, Charles, and Saint Mary’s Counties), West Virginia, Virginia (except Alexandria and Fairfax Counties), South Carolina, and North Carolina. (Composed of the Middle Depart-ment and the Departments of the East, Virginia, South Carolina, and North Carolina.—G. O. No. 118, A. G. O., 1865.)

July 1, 1865.—Maj. Gen. GEOKGE G. MEADE, U. S. Army; headquarters at Philadelphia, Pa. (Assigned by G. O. No. 118, A: G. O., June 27, 1865.)

May 19, 1866.—Composed of the Middle Department and the Departments of the East, Virginia, and the Carolinas. (Departments of South Carolina and North Carolina consolidated.—G. O. No. 32, A. G. O., 1866.)

August 6, 1866.—Discontinued. (G. O. No. 59, A. G. O., 1866.)

February 12, 1868, to—

February 12, 1868.—To consist of the New England States, the States of New York, New Jersey, Pennsylvania, Ohio, Michigan, Indiana, Illinois, Wisconsin, Delaware, and Maryland, and the District of Columbia. (Composed of the Departments of the East, Lakes, and Washington.—G. O. No. 10, A. G. O., 1868.)

March 31, 1868.—Maj. Gen. WINFIELD S. HANCOCK,* U. S. Army; headquarters at Washington City. (Assigned by G. O. No. 17, A. G. O, March 28, 1868.)

October 17, 1868.—Headquarters established at New York City. (G. O. No. 83, A. G. O., October 14, 1868.)

March 16, 1869.—To consist of the New England States, the States of New York, New Jersey, Pennsylvania, Ohio, Michigan, Indiana, Wisconsin, Delaware, Maryland, and Virginia, and the District of Columbia. (Composed of the Departments of the East and Lakes and First Military District; State of Illinois. Department of the Lakes, transferred to. the Department of the Missouri; Department of Washington merged into. the Department of the East; First Military District added to. the division.—G. O. No. 18, A. G. O., 1869.)

March 29, 1869.—Maj. Gen. GEORGE G. MEADE, U. S. Army; headquarters at Philadelphia, Pa. (Assigned by G. O. No. 10, A. G. O, March 5, 1869.)

January 29, 1870—To consist of the New England States, the States of New York, New Jersey, Pennsylvania, Ohio, Michigan, Indiana, Wisconsin, Delaware, Maryland, Virginia, West Virginia, and North Carolina, and the District of Columbia. (Composed of the Departments of the East, Lakes, and Virginia. The new department absorbed the First Military District, and took Maryland from the Department of the East, West Virginia from the Department of the Cumberland, and North Carolina from the Department of the South.—G. O. No. 11, A. G. O, 1870.)

April 30, 1870—Composed of the Departments of the East and Lakes. (Department of Virginia merged into the Department of the East.—G. O. No. 41,* A. G. O., April 15 1870.)

November 1, 1871.—To consist of the New England States, the States of New York, New Jersey, Pennsylvania, Ohio, Michigan, Indiana, Wisconsin, Delaware, Maryland, Virginia, and West Virginia, and the District of Columbia. (North Carolina, Department of the East, transferred to the Department of the South.—G. O. No. 66, A. G. O., 1871.)

December 16, 1872.—Maj. Gen. WINFIKLD S. HANCOCK, U. S. Army; headquarters at New York City. (Assigned by G. O. No. 100, A. G. O., November 25, 1872; see also G. O. No. 105, A. G. O., December 7, 1872.)

October 31, 1873.—The Departments of the East and Lakes having been discontinued, this division embraces the same geographical limits as heretofore, but without subdivisions as departments. (G. O. No. 106, A. G. O., October 29, 1873.)

June 26, 1876.—To consist of the New Eugland States, the States of New York, New Jersey, Pennsylvania, Ohio, Michigan, Indiana, Wisconsin, Delaware, Maryland, Virginia, and West Virginia, the District of Columbia, the States of North Carolina, South Caroliua, Georgia, Florida, and the parts of Tennessee and Kentucky east of the Tennessee River. (North and South Carolina, Georgia, Florida, and the parts of Tennessee and Kentucky east of the Tennessee River, Department of the South, annexed to the Division of the Atlantic.—G. O. No. 50, A. G. O., 1876.)

March 2, 1877.—To consist of the New England States, the State of New York (except the Military Academy and the post of West Point), New Jersey, Pennsylvania, Ohio, Michigan, Indiana, Wisconsin, Delaware, Maryland, Virginia, and West Virginia, the District of Columbia, the States of North Carolina, South Carolina, Georgia, Florida, and the parts of Tennessee and Kentucky east of the Tennessee River. (Military Academy and post of West Point created an independent Military department.—G. O. No. 15, A. G. O., 1877.)

May 1, 1877.—To consist of the New Eugland States, the State of New York (except that portion formiug the Department of West Point), New Jersey, Pennsylvania, Ohio, Michigan, Indiana, Wisconsin, Delaware, Maryland, Virginia, and West Virginia, the District of Columbia, the States of North Carolina, South Carolina, Georgia, Florida, Louisiana, Arkansas, Alabama, Mississippi, Kentucky, and Tennessee. (Louisiana, Arkansas, Alabama, Mississippi, and the parts of Kentucky and Tennessee west of the Tenncssee, River, Department of the Gulf, transferred to the Division of the Atlantic.—G. O. No. 42, A. G. O., 1877.)

November 8, 1877.—All territory within the limits of the division and not included in the Departments of the Gulf, South, and West Point, created the Department of the East. (G. O. No. 101, A. G. O., 1877.)

July 1, 1878.—Headquarters established at Governor’s Island, New York Harbor. (G. O. No. 42, A. G. O., 1878.)

December 18, 1880—To consist of the New England States, the States of New York (except that part forming the Department of West Point), New Jersey, Pennsylvania, Ohio, Michigan, Indiana, Wisconsin, Delaware, Maryland, Virginia, West Virginia, North Carolina, South Carolina, Georgia, Florida, Alabama, Mississippi, Kentucky, Tennessee, and the District of Columbia. (Louisiana and Arkansas transferred to the Division of the Gulf.—G. O. No. 84, A. G. O., 1880.)

EASTERN DIVISION.*

May 19, 1837, to July 12, 1842.

May 19, 1837.—To embrace all of the country east of a line commencing at the mouth of the Mississippi, thence up that river