The corps was formed on 6 April 1992 through the amalgamation of several separate services:[2] In October 2022, to celebrate the Corps' 30th anniversary, a parade was held in Winchester, in the presence of The Duchess of Gloucester, Deputy Colonel in Chief.

The branch also provides clerical support to headquarters at all levels including various departments of the MOD Head Office in Whitehall and the Permanent Joint Headquarters (PJHQ) at Northwood working alongside counterparts in the Royal Navy and RAF, as well as in divisional and brigade headquarters and at unit and sub-unit level through Land Forces.

[5] The AGC Pro unifies two former services which, while no longer independent, retain their identities and cap badges.

The newly formed Military Provost Guard Service (MPGS) is also part of this branch.

In 2006 the former RAEC cap badge of a 'fluted flambeau with five flames, with crown and scroll' was reintroduced, with 'ETS' replacing 'R.A.E.C.'