"40th Light Anti-Aircraft Regiment, Royal Artillery" . . "41st Light Anti-Aircraft Regiment, Royal Artillery" . . . "40th Light Anti-Aircraft Regiment, Royal Artillery" . ":40th Light Anti-Aircraft Regiment, Royal Artillery#Post-War" . . . . . . "1939" . . . . "Regiment" . "540 LAA Rgt" . . "1950" . . . . . . . . . "40th LAA Rgt" . . "40th Light Anti-Aircraft Regiment, Royal Artillery#Post-War" . . "Air defence" . . . . . . . "40" . "1946" .