The United States Army Quartermaster Corps is a Sustainment (formerly combat service support

Combat service support

Combat service support is a subset of military logistics. Combat service support is more limited in depth than logistics, as it primarily addresses those factors directly influencing combat operations.-United States Army:...

 (CSS)) branch of the United States Army

United States Army

The United States Army is the main branch of the United States Armed Forces responsible for land-based military operations. It is the largest and oldest established branch of the U.S. military, and is one of seven U.S. uniformed services...

. It is also one of three U.S. Army logistics branches, the others being the Transportation Corps

United States Army Transportation Corps

The Transportation Corps was established 31 July 1942 by Executive Order 9082. The Transportation Corps is a combat service support branch of the U.S. Army, and was headquartered at Fort Eustis, Virginia, but has now moved to Fort Lee, Virginia. The Transportation Corps is responsible for the...

 and the Ordnance Corps.
The Quartermaster Corps is the U.S. Army's oldest logistics branch, established 16 June 1775. On that date the Second Continental Congress

Second Continental Congress

The Second Continental Congress was a convention of delegates from the Thirteen Colonies that started meeting on May 10, 1775, in Philadelphia, Pennsylvania, soon after warfare in the American Revolutionary War had begun. It succeeded the First Continental Congress, which met briefly during 1774,...

 passed a resolution providing for "one Quartermaster General

Quartermaster general

A Quartermaster general is the staff officer in charge of supplies for a whole army.- The United Kingdom :In the United Kingdom, the Quartermaster-General to the Forces is one of the most senior generals in the British Army...

 of the grand army and a deputy, under him, for the separate army." From 1775 to 1912 this organization was known as the Quartermaster Department.