Lt. Col. Michael Lee Lanning retired from the US Army after more than 20 years of service. He is a decorated veteran of the Vietnam War. Lanning has written 14 books on military history, including ...view moreLt. Col. Michael Lee Lanning retired from the US Army after more than 20 years of service. He is a decorated veteran of the Vietnam War. Lanning has written 14 books on military history, including The Battle 100 and The Civil War 100.view less