"6th Heavy Anti-Aircraft Regiment, Royal Artillery" . . . . . "6 HAA Regt" . . "6th AA Rgt" . "77th Heavy Anti-Aircraft Regiment, Royal Artillery" . "1935" . . . "1942" . . "1942" . . . "3rd Light Anti-Aircraft Regiment, Royal Artillery" . "6th Anti-Aircraft Regiment" . "6th Heavy Anti-Aircraft Regiment, Royal Artillery" . "6th Anti-Aircraft Regiment, Royal Artillery" . . "77th Heavy Anti-Aircraft Regiment" . "Air Defence" . . . . . . . "6th HAA Regiment" . . . "Regiment" . . . "6th HAA Regt" . "6th HAA Rgt" . .