WWII & Korean War Infantry Field Pack ~ 1951 US Army; from The Big Picture TV-211

The  WWII-Korean War US Army infantry field pack (M-1945 Combat Pack), cartridge belt, helmet, canteen, bayonet and entrenching tool are shown by Colonel (later Lieutenant General) William Wilson "Buffalo Bill" Quinn. 

Originally a public domain film, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied.

The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original).

https://en.wikipedia.org/wiki/Haversack

Wikipedia license: http://creativecommons.org/licenses/by-sa/3.0/

...Haversacks were in use during the American Civil War, 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 M-1910 haversack (or M10) as the standard back pack for all infantrymen. The pack is essentially a sheet of rugged khaki-colored canvas that folds around its contents (bedroll, clothing, daily rations, and assorted personal items), and is held together by flaps and adjustable buckle-straps. The two shoulder straps are designed to attach to a web belt or suspender configuration. The exterior of the pack has loops, rings, and grommet tabs for attaching a bayonet sheath, a "meat can" (mess kit) pouch, and a canvas carrier for a short-handled shovel (a.k.a. entrenchment tool).

The M-1910 haversack pack continued production during the interwar years with minor modifications and was issued to many troops in the early part of World War II due to M-1928 haversack shortages. "An upgraded haversack was developed in 1928 that had quick release buckles and a web strap and buckle closure on the meat can pouch replacing the metal button. However, the M-1928 haversack did not go into production until 1940, and older haversacks continued to be issued until stocks were exhausted." The M-1944 Combat Pack was developed from the much lighter and user-friendly US Marine Corps M-1941 Jungle pack which was developed during the Banana Wars which required a lighter pack in the tropics. The M-1944 pack had some shortcomings and a new M-1945 began replacing earlier packs in February 1945. The two packs had incompatible combat and cargo packs due to different release buckles.

The new two-part design, based on the Marine M-1941 jungle pack, used a much smaller back pack (for rations, clothes, ammunition, and messkit), and a separate cargo bag that attached to the bottom for extra clothes, shoes, and miscellaneous other items. The upper field pack had the same type of grommet tabs and loops as the M-1928 for attaching a bayonet and entrenchment tool plus straps for securing a "horseshoe" bedroll.

The M-1936 field bag was a copy of the British officers Musette bag of World War I and to be issued to officers and mounted personnel. It was a smaller pack lacking shoulder straps and could be attached to a set of cotton web suspenders or carried by a single general purpose shoulder strap. It intended to carry rations, mess gear, and other essential items. It was smaller as less essential gear would be carried on a vehicle...

https://en.wikipedia.org/wiki/William_Wilson_Quinn

Lieutenant General William Wilson "Buffalo Bill" Quinn (November 1, 1907 – September 11, 2000)[1][2] was a United States Army officer, who served in intelligence during World War II. Born in Crisfield, Somerset, Maryland and a 1933 graduate of West Point, Quinn retired as a lieutenant general on March 1, 1966 as the commanding general of the Seventh United States Army. He died in Washington, DC at Walter Reed Army Hospital at 92 years old...