From September 25, 1920 to November 23, 1920, he served as fill-in commander of the 4th Infantry Division, and was then assigned full command of the division until April 1921. On April 9, 1921, Zagórski asked of his own accord to be transferred to the Polish Army Reserves. From April 1921 to March 1923, Zagórski was enlisted in the reserves, and spent most of his time working for "Francopol" - a company which purchased and imported French-made aeroplanes for the Polish Army.