3 Medium Brigade was re-designated 3 Medium Regiment RA in May 1938. It was re-organised with two batteries in February 1939. In April 1947 3 Medium Regiment RA was re-designated 15 Medium Regiment RA.
Illustrations of the formation badges under which a unit served or supported are given. This is no guarantee that the unit used this formations badge.
|3 Sep 39||Southern Command||Larkhill, Wiltshire, UK|
|Oct 39||1 Corps||France|
|Jun 40||Home Forces||UK|
|May 43||Middle East Forces||N Africa|
|Jul 44||8 Army||Italy|
|May 45||2 Army||NW Europe|
|Sep 39||2/11, 6/10|
|Sep 39||6 inch Howitzer|