sentences:  In 1910, the U.S. Army adopted the M1910 haversack as the standard pack for all infantrymen.The pack is essentially a sheet of canvas that folds around its contents (clothing, daily rations, and assorted personal items), and is held together by adjustable straps that thread through loops.A "tail" threaded onto the bottom of the haversack with a leather strap is intended to hold the bedroll, and can be detached from the haversack without disturbing the contents of the pack.