Imjin Barracks is a British Army installation situated near Innsworth in Gloucestershire, that is home to the headquarters of NATO's Allied Rapid Reaction Corps (ARRC).

In 1951, the headquarters of the RAF Record Office which had been based nearby in Gloucester and Barnwood, moved to the station and gained Group status.

The new collocated HQ's were subsequently merged to form Air Command and the decision was taken to close RAF Innsworth.

The drawdown took place over the next three years with elements of the Personnel Management Agency moved to High Wycombe and RAF Cranwell.

[2][3] In 2010, the barracks also became home to the NATO Allied Rapid Reaction Corps (ARRC), a 3-star headquarters with more than 400 permanent staff from 21 contributing nations, which relocated from the Rheindahlen Military Complex in Germany.