Tarihin soja na Girka a lokacin yakin duniya na biyu ya fara ne a ranar 28 ga Oktoba 1940, lokacin da Sojojin Italiya suka mamaye Girka daga Albania , suka fara yakin Greco-Italian.Sojojin Girka sun dakatar da mamayewa na dan lokaci kuma suka tura Italiyawa zuwa Albaniya.Nasarar da Girka ta samu ya tilastawa Jamus na Nazi shiga tsakani.Jamusawa sun mamaye Girka da Yugoslavia a ranar 6 ga Afrilu 1941, kuma sun mamaye kasashen biyu a cikin wata guda, duk da taimakon da Birtaniyya ke baiwa Girka a matsayin wata tawagar balaguro.An kamalla mamaye kasar Girka a watan Mayu tare da kame Crete daga iska, ko da yake Fallschirmjäger (Jami'an 'yan sandan Jamus) sun yi mummunar barna a cikin wannan aiki da Oberkommando der Wehrmacht (Babban Umurnin Jamus) ya yi watsi da manyan ayyukan jiragen sama na saura. na yakin.Karkashin albarkatun da Jamus ta yi a yankin Balkan ma wasu masana tarihi na ganin ya jinkirta kaddamar da mamayewar Tarayyar Sobiyet da wani wata mai muhimmanci, wanda ya yi barna a lokacin da sojojin Jamus suka gaza kwace birnin Moscow.An mamaye Girka kuma aka raba tsakanin Jamus,Italiya , da Bulgaria , yayin da Sarki da gwamnati suka gudu zuwa gudun hijira aMasar .Ƙoƙarin farko na juriya da makamai a lokacin rani 1941 an murkushe su daga ikon Axis, amma ƙungiyar Resistance ta sake farawa a cikin 1942 kuma ta girma sosai a cikin 1943 da 1944, ta 'yantar da manyan sassan ƙasar tsaunuka tare da ɗaure manyan sojojin Axis.Rikicin siyasa tsakanin kungiyoyin Resistance ya barke a cikin rikicin cikin gida a tsakaninsu a karshen shekara ta 1943, wanda ya ci gaba har zuwa lokacin bazara na shekara ta 1944. Ita ma gwamnatin Girka da ke gudun hijira ta kafa sojojinta nata, wadanda suka yi aiki da yaki tare da Birtaniya a Gabas ta Tsakiya. Arewacin Afirka, da Italiya.Gudunmawar sojojin ruwa na Girka da na 'yan kasuwa, musamman, na da matukar muhimmanci ga al'amuran kawance.An 'yantar da Mainland Girka a watan Oktoban 1944 tare da janyewar Jamus a gaban sojojin Red Army da ke ci gaba, yayin da sojojin Jamus suka ci gaba da kasancewa a tsibirin Aegean har zuwa karshen yakin.Yaki da mamaya sun durkusar da kasar, kuma tattalin arzikinta da ababen more rayuwa sun lalace.A shekara ta 1946, yakin basasa ya barke tsakanin gwamnatin masu ra'ayin rikau da ke samun goyon bayan kasashen waje da kuma 'yan daba masu ra'ayin rikau, wanda ya kai har shekara ta 1949.