For a bit of background reading I'd suggest the classic,
Recollections of Rifleman Bowlby by Alex Bowlby.
He was in that Bde.
Answers to be found if Geoff can get hold of this work.
THE RIFLE BRIGADE 1939-1945
Original Paper Covers 2 Volume Set 133 & 174pp Illustrations, Roll Of Honour The Full Story Of The Brigade Of Rifles In WW2
THE RIFLE BRIGADE 1939-1945: Committee Of The Rifle Brigade "Chronicle"