3 ▁May . ▁He ▁was ▁intens ively ▁inter rog ated , ▁after ▁which ▁he ▁was ▁tried ▁before ▁a ▁Y ug oslav ▁military ▁court ▁on ▁war ▁cr imes ▁charges , ▁one ▁of ▁which ▁related ▁to ▁his ▁command ▁of ▁Luft fl otte ▁IV ▁during ▁Operation ▁Ret ribution . ▁Lö hr ▁was ▁conv icted ▁by ▁the ▁Y ug oslav ▁military ▁court ▁and ▁sent enced ▁to ▁death . ▁He ▁was ▁executed ▁on ▁ 2 6 ▁February ▁ 1 9 4 7 . ▁Following ▁the ▁invasion , ▁K ren ▁was ▁appointed ▁head ▁of ▁the ▁Air ▁Force ▁of ▁the ▁Independent ▁State ▁of ▁Cro atia ▁( , ▁Z ND H ). ▁He ▁was ▁arrested ▁in ▁Italy ▁in ▁March ▁ 1 9 4 7 ▁and ▁extr ad ited ▁to ▁Y ug oslav ia , ▁where ▁he ▁was ▁tried ▁on ▁un related ▁charges ▁of ▁war ▁cr imes ▁for ▁his ▁role ▁in ▁the ▁target ing ▁of ▁civ ili ans ▁by ▁the ▁Z ND H . ▁He ▁was ▁found ▁guilty ▁on ▁all ▁counts ▁and ▁executed ▁in ▁ 1 9 4 8 . ▁ ▁The ▁bomb ing ▁of ▁Bel grade ▁was ▁dep icted ▁in ▁the ▁ 1 9 8 0 ▁Y ug oslav ▁feature ▁film ▁Who ' s ▁Sing in ' ▁Over ▁There ? ▁() ▁and ▁the ▁ 1 9 9 5 ▁feature ▁film ▁Under ground ▁( ). ▁It ▁is ▁also ▁the ▁subject ▁of ▁M iod rag ▁Pav lo vić ' s ▁poem ▁Bel grade ▁ 1 9 4 1 ▁( ). ▁The ▁Ser bian ▁American ▁poet ▁Charles ▁Sim ic , ▁a ▁surv iv or