During the Invasion of Poland in 1939 Urbanowicz was in an improvised Ulez Group, comprising of flying instructors, flying obsolete PZL P.7a fighters and covering the Dęblin and Ułęż airfields.
Urbanowicz was in an improvised Ulez Group. This was during the Invasion of Poland in 1939. Urbanowicz was comprising of flying instructors, flying obsolete PZL P.7a fighters and covering the Dęblin and Ułęż airfields. This was during the Invasion of Poland in 1939.