I've got a Christmas card sent by a uncle to my parent's in 1944, look's to have been made up by his unit and as BLA on it which I think is British Land Army, but why that term? regards, dave...
The troops themselves said it was ''Burma Looms Ahead.'' As once they finished the war with Germany they'd be off to fight the Japanese.
After WW2 the celebrity of Montgomery may have meant that "21st Army Group" became retrospectively the identifier. The British sense of humour usually subverts official acronyms:- British Liberation Army might have been chosen over the historic British Expeditionary Force because BEF had become known as "Back Every Friday" without foreseeing Burma Looms Ahead. A not dissimilar process occurred with the random codeword Op TELIC for the invasion of Iraq in 2003, which became Tell Everyone Leave is Cancelled BLA =