 Nyorera kupfuurira kweiyi ndima - Pakazosvika Gumiguru 1942, Davidson akanga ari colonel uye mutevedzeri wemukuru weinjiniya weWestern Task Force yeOperation Torch yeAllied North Africa pasi pemutungamiriri weGeneral George S. Patton. Sezvo 1st Armored Division yakatamira kuti ipinde muSicily munaJune 1943, yakashandurwa ikaitwa Seventh United States Army, uye Davidson akava mukuru weinjiniya mukuru. Sainjiniya wokurwisa, akabatsira Mauto Echinomwe kuti asvike kuSicily uye akaita kuti zvombo zvaPatton zvemauto zvifambe nokukurumidza munzvimbo yomuvengi. Patton anoonga akashandisa imwe yenyeredzi dzake dzemauto kukudza Davidson mukukwidziridzwa kwaSeptember 1943 kunzvimbo yehondo kuti ave brigadier general, mumwe wevaduku vehondo pazera remakore 39. Davidson akaramba ari muSeventh Army pasi pehutungamiri hwayo hwechinguva naGeneral Mark W. Clark ipapo General Alexander Patch uye aive akakosha mukuronga Operation Anvil Operation Dragoon, Allied landing kumaodzanyemba kweFrance zvichitevera D-Day invasion yeNormandymuna June 1944. Akaenderera mberi neSeventh Army mukufamba kwayo muGermany. Pakupera kwehondo akanga ari injinjini neuto reUnited States reChishanu reMashure-ehondo uye akashanda semutungamiri wekutanga weNuremberg War Crimes Tribunal kune vanopomerwa mauto. 