An Army field manual "designed as a supply and evacuation guide for armored units.... Covers supply of armored units, evacuation of personnel, prisoners of war, vehicles, and salvage; rail and water transportation and trains in theater of operations."
"The purpose of this manual is three-fold: a. To give you those basic principles of watermanship that will enable you to meet with confidence any emergency that may arise. b. To teach you certain fundamental practices used during small landing-craft operations. c. To show you how to swim small lakes or rivers under combat conditions."