Bayan barkewar yakin duniya na biyu , gwamnatin Masarautar Bulgaria karkashin Bogdan Filov ta ayyana matsayinta na tsaka-tsaki, inda ta kuduri aniyar kiyaye shi har zuwa karshen yakin, amma tana fatan samun ribar yankuna marasa jini, musamman a kasashen da ke da gagarumin rinjaye. Al'ummar Bulgaria da kasashe makwabta suka mamaye bayan yakin Balkan na biyu da yakin duniya na daya .Amma a fili yake cewa, babban matsayi na geopolitical na Bulgaria a cikin Balkans ba makawa zai haifar da matsin lamba daga waje daga bangarorin biyu na yakin duniya na biyu.^[47] Turkiyya ta yi yarjejeniya da Bulgaria.^[48]Bulgaria ta yi nasarar yin shawarwarin dawo da Kudancin Dobruja, wani yanki na Romania tun 1913, a cikin yarjejeniyar Craiova da Axis ta dauki nauyi a ranar 7 ga Satumba 1940, wanda ya karfafa fatan Bulgaria na warware matsalolin yanki ba tare da shiga kai tsaye a yakin ba.Duk da haka, an tilasta wa Bulgaria shiga cikin ikon Axis a shekara ta 1941, lokacin da sojojin Jamus da ke shirin mamaye Girka daga Romania sun isa kan iyakar Bulgaria kuma suka nemi izinin wucewa ta yankin Bulgaria.Tsar Boris III ya yi barazanar fuskantar arangama da sojoji kai tsaye, ba shi da wani zaɓi face ya shiga ƙungiyar fasikanci, wadda aka yi a hukumance a ranar 1 ga Maris, 1941. Ba a samu 'yan adawa kaɗan ba, tun da Tarayyar Soviet ta kasance cikin ƙulla yarjejeniya da Jamus .^{[49 <]} > Duk da haka sarkin ya ki mika Yahudawan Bulgaria ga Nazis, inda ya ceci rayuka 50,000.^[50]Sojojin Bulgaria suna maci a faretin nasara a Sofia na murnar kawo karshen yakin duniya na biyu, 1945Bulgeriya ba ta shiga cikin mamayar da Jamus ta yi wa Tarayyar Soviet wanda ya fara a ranar 22 ga watan Yunin 1941 ba kuma ba ta ayyana yaki a kan Tarayyar Soviet ba.To sai dai kuma duk da rashin ayyana yaki a hukumance daga bangarorin biyu, sojojin ruwan Bulgeriya sun yi taho-mu-gama da rundunar sojojin ruwan bakar fata ta Tarayyar Soviet, wadda ta kai hari kan jiragen ruwa na Bulgaria.Ban da wannan kuma, sojojin Bulgaria da ke da sansani a yankin Balkan sun gwabza da kungiyoyin gwagwarmaya daban-daban.Gwamnatin Bulgaria ta tilastawa gwamnatin Bulgaria shelanta yaki akan Birtaniya da Amurka a ranar 13 ga watan Disamban 1941, lamarin da ya haifar da tashin bam a Sofia da wasu garuruwan Bulgaria da jiragen yakin kawancen suka yi.A ranar 23 ga Agusta 1944, Romania ta bar Axis Powers kuma ta ayyana yaki a Jamus, kuma ta ba da damar sojojin Soviet su ketare yankinta don isa Bulgaria.A ranar 5 ga Satumba 1944 Tarayyar Soviet ta shelanta yaki a kan Bulgaria kuma ta mamaye.A cikin kwanaki uku, Soviets sun mamaye arewa maso gabashin Bulgaria tare da manyan biranen tashar jiragen ruwa na Varna da Burgas.A halin da ake ciki, a ranar 5 ga Satumba, Bulgaria ta shelanta yaki a kan Jamus na Nazi.An umurci sojojin Bulgaria da kada su ba da juriya.^[51]A ranar 9 ga watan Satumban shekarar 1944 a wani juyin mulki aka hambarar da gwamnatin firaministan kasar Konstantin Muraviev tare da maye gurbinsa da gwamnatin Fada ta Fatherland karkashin jagorancin Kimon Georgiev.A ranar 16 ga Satumba, 1944, Tarayyar Soviet ta shiga Sofia.^[51] Sojojin Bulgaria sun nuna nasarori da dama a kan 7th SS Volunteer Mountain Division Prinz Eugen (a Nish), 22nd Infantry Division (a Strumica) da sauran sojojin Jamus a lokacin aiki a Kosovo da Stratsin.^[52]