Kammala jumla mai zuwa: A shekara ta 1861 Grujić ya kasance a Prussia yana karatu a Kwalejin Soja lokacin da tayar da hankali ya barke a yankin Rasha na Poland da aka raba,
Tashin hankali na Poland ya sa matasa 'yan tawayen Poland suka yi adawa da mamayewar Rasha, wanda aka yi wahayi zuwa gare shi ta hanyar kishin kasa da juyin juya hali wanda ya mamaye Turai a wancan lokacin, Sava Grujić ya tafi Poland kuma ya shiga cikin tawayen. Grujić ya yi yaƙi tare da ɗan'uwansa mai sa kai na Serbia Jevrem Marković wani wanda ya kammala karatu daga Kwalejin Sojojin Belgrade wanda kuma aka tura shi zuwa Prussia don yin karatu (horar da shi a matsayin jami'in sojan doki). Bayan gazawar Tashin hankali, Grujić ya koma St. Petersburg kuma an ba shi damar komawa karatun sa yayin da Jevrem Marković ya koma Belgrade