Rubuta ci gaba don wannan sakin layi - Ya yi aiki a matsayin "praefectus fabrum" (shugaban injiniyoyi) a ƙarƙashin Kaisar a Gaul; waƙar Catullus kuma tana nufin hidimarsa a Biritaniya da kuma a Pontus da Hispania, yana nuna cewa ya yi aiki a lokacin yakin basasa. Daga cikin ayyukan injiniya da sojojin Kaisar suka samu a wannan lokacin, wanda Mamurra na iya kasancewa wani ɓangare, sun haɗa da saurin gina gada a kan Rhine a shekara ta 55 kafin haihuwar Yesu, da tsarawa da gina sabon nau'in jirgin ruwa don tafiya ta biyu zuwa Biritaniya a shekara ta 54 kafin haihuwar Yesu, da kuma sau biyu na Alesia
a shekara ta 52 kafin haihuwar Yesu.