In this episode we’re going to be looking a Japanese submarine operations in the Pacific in the early part of the war. While I’m sure we’re all familiar with the Imperial Japanese surface fleets actions during 1941-42, especially if you’ve listened to my discussions with Jeff Cox in episode #14 and #63, but there seems to be very little mention of submarines. Which is interesting because if we look at the Battle for the North Atlantic it was all about the German U-Boats. Joining me today is Mark Stille. Mark is a retired US Navy commander, alumni of the US Naval War College and author of numerous Osprey titles, mainly focusing on the war in the Pacific - his latest being USN Fleet Destroyer vs IJN Fleet Submarine.