The messerschmitt bf109 was one of the first truly modern fighters of ww2 originally conceived as an interceptor the bf109 fulfilled multiple roles as bomber escort fighter bomber groundndashattack aircraft and reconnaissance aircraft the final production version of the bf109 was the k series or ldquokurfuumlrstrdquo externally similar to the g series it had a large number of internal and aerodynamic changes that improved its effectiveness and remedied existing flaws which