In World War I he served in the Polish legions 1 and 4 in the Lvov region. Starting as a private soldier he was made an officer on 1 April 1916,[1] and in 1917 took command of the city Defense Command where they took the main train station in Lviv between 3–4 November 1918. After the war he was assistant to Chief Executive lomendanta Czesław Mączyński in the peace negotiations.
From June to December 1919 he was a student at the military general staff School Course in Warsaw, but his studies were interrupted by the Polish-Soviet War where he was Chief of staff of the 5th Infantry Division but he resumed his studies from 1921 to 1922 at Doszkolenia Military School in Warsaw.
After graduating he was then assigned to the 1st Division as Chief of staff.[2] In December 1926 he transferred to Warsaw, and in July 1929 he took command of the 2nd Infantry Regiment in Sandomierz.[3]