Haversack

 Haversacks were in use during the American Civil War and the Indian Wars, as recounted in Grant's memoirs, "In addition to the supplies transported by boat, the men were to carry forty rounds of ammunition in the cartridge-boxes and four days' rations in haversacks." In 1910, the U.S. Army adopted the M1910 haversack as the standard pack for all infantrymen to store items.