Rubuta ci gaba ga wannan sakin layi - 503rd Battalion Panzer Battalion (; a takaice: "s.Pz.Abt. 503") ya kasance wani rukunin Panzer mai nauyi na Jamus "Abteilung" (rukunin girman runduna mai zaman kanta) sanye take da tankunan Tiger I da Panzer III. A cikin 1944, an sake sanye shi da sabon Tiger II. Rundunar ta ga aikin a Gabas da Yammacin
Ƙungiyoyi a lokacin yakin duniya na biyu. Kamar yadda yake tare da sauran rundunonin tanki masu nauyi na Jamus, galibi ba a sanya shi ga rukuni ɗaya ba, amma an canza shi bisa ga yanayin yaƙi. Daga baya bataliya ta zama wani ɓangare na sabuwar ƙungiyar Panzer Corps Feldherrnhalle a matsayin Feldherrnhalle Heavy Tank Battalion.