In Revolutionary France, the adjudant-général was a senior staff officer, effectively an assistant to a general officer. It was a special position for lieutenants-colonels and colonels in staff service. Starting in 1795, only colonels could be appointed to the position. It was supplemented by the rank of adjudant-commandant in 1800. In 1803 the position was abolished and adjudants-généraux reverted to the rank of colonel.
The chief administrative officer of the United States Army, who is subordinated to the Army Chief of Staff, and is known as the Assistant Chief of Staff, G-1, or ACS, G-1. This officer is head of the Adjutant General's Corps, and is responsible for the procedures affecting personnel procurement and for the administration and preservation of records of all army personnel. See List of Adjutants General of the U.S. Army. As of 11 December 2011, the post is held by Brigadier General Jason T. Evans.
The chief administrative officer of a major military unit, such as a division, corps, or army. This officer is normally subordinated to the unit chief of staff, and is known as the G-1.