In 1917, he was promoted to captain and planned to study at Jagiellonian University, but instead, he continued to fight the Russians in Eastern Galicia, Bukovina and Volhynia.

In October 1920, following order of General Lucjan Żeligowski, he captured Švenčionys (Swieciany) (see Republic of Central Lithuania).

On 19 March 1937 Olbrycht was promoted to Generał brygady; in May 1938 he returned to Center of Infantry Training, where he remained until September 1939.

1, and in late July of that year he was appointed commandant of Department of Officer Infantry and Cavalry at Polish Ministry of National Defence.

Olbrycht, as commandant of Warsaw Military District, actively fought anti-Communist rebellion (see Cursed soldiers).