His ancestors originated from Herzegovina, from where, under pressure from the Turks, they first emigrated to Sremska Mitrovica, and then moved to (the present) Serbia, in Velika Vranjska.
He was a scribe to the obor-knez of Pocer Ilija Marković, the Grand Vilayet Judge in Karađorđe's Serbia (1811-1813) from Grušić (near Šabac).
Miloš Stojićević Pocerac immediately joined the fight, visiting the villages of Pocer and raising people to arms.
In the first days of the uprising, Miloš cruised Bećin brdo with several rebels and prevented the exit of Turks from Šabac.
It was at that time when Karađorđe from the main rebel camp in Beljin went to the Pocer villages on several occasions: Grušić, Desić, Miloševac.
Together with Stojan Čupić and Nikola Smiljanić, he cut off the Turks retreat routes through the Kitog mountain pass in Bosnia and Herzegovina.
On that occasion, he captured the entire equipment of Kulin-kapetan with a horse and the famous saber, on which were inscribed the names of the Kulin's family.