Whakaotihia te rerenga e whai ake nei: I uru ia ki te ope Imperial. I te tau 1634 kua eke ia ki te rangatira o te ope taua. I tere tana piki haere i roto i nga rarangi, i tetahi waahanga na ona pukenga, i tetahi waahanga na tona ingoa whanau (ko Eleonora Gonzaga te Empress o te Emepaea o Roma Tapu, te wahine a Emperor Ferdinand II). Ko Gonzaga tētahi o ngā rangatira i te
Te Pakanga o Nördlingen (1634). I te tau 1640, ka riro ia hei rangatira o te taone o Vienna. E rua ngā pā i hangaia e ia i tapaina ki tōna ingoa. I te tau 1642 i whakahau ia me Count Bruay i te parirau matau o te ope rangatira i te pakanga kino o Breitenfeld. I te tau i muri mai, ka whakahaua e ia tētahi ope o te Emepara i Hungary.