Pedzisa mutsara unotevera: 21st Army Group yaiva Hondo Yenyika II yeBritain mauto makuru, achitungamirira mauto maviri emunda uye mamwe mauto anotsigira, anoumbwa zvikurukuru neBritish Second Army uye First Canadian Army. Yakagadzwa muLondon muna Chikunguru 1943, pasi pekutungamira kweSupreme Headquarters Allied Expeditionary Force (SHAEF), yakapiwa Operation Overlord, iyo
Kupinda kweHondo yeAllied yeEurope, uye yaiva simba rinokosha reAllied muEuropean Theatre. Panguva dzakasiyana-siyana mukati mekuvapo kwayo, 21st Army Group yaive nemamwe mauto eBritish, eCanada, eAmerica nePoland kana mauto akabatanidzwa nayo. Boka rechi21 reMasoja rakashanda muNorthern France, Luxembourg, Belgium, Netherlands neGermany kubva muna Chikumi 1944 kusvika Nyamavhuvhu 1945, payakatumidzwa zita rekuti British Army of the Rhine (BAOR).