Notes:

In "With Churchills to War" Peter Gudgin gives the AOS of 48 RTR as being brown. M.A. Bellis gives it a red.

As original constituted the Brigade consisted of 42RTR, 44RTR and 48RTR, 43 RTR replacing 44 RTR in Sept/Oct 1940. 48RTR thus was orinally the least senior regiment in the pbrigade and was allocated the 175 serial. When the brigade was re-organised 48RTR appear to have retained this serial despite precedence (ref. training photos for Dieppe)

UK, June 1942- Dec 1942

4th Mixed Division

Notes:

Tunisia, Mar 1943 - Apr 1944

4th Mixed Division

Notes:

Arrived 25th Bone March 1943

The only tank brigade to see action as part of a mixed division.

Italy, May 1944 - Jan 1945

Notes:

145 RAC Disbanded 17/01/45

Alternate Brigade insignia used from summer 19'44 onwards.

Yellow/Red background - source P. Gudgin, "With Churchills to War"

Italy, Jan 1945 -

Notes:

1. North Irish Horse transfered from 25 Tank Brigade to replace 145 RAC. There is some confusion over the relative seniority of NIH and 12 RTR. 12 RTR is often held to be senior as it was a regular unit whilst NIH was militia. However, whilst 12 RTR was raised during the war, the NIH was a cavalry regiment in the Supplementary Reserve prior to transfering to the RAC in September 1939 and so was given seniority within 21 Tank Brigade. According to Richard Doherty's NIH Regimental History, this is confirmed in the official account 21 Tank Brigade Operations in Italy, August 1944-May 1945.