 Complete the following phrase:  The Polish Air Force was at a severe disadvantage against the Luftwaffe. Although its pilots were highly trained, the Polish Air Force lacked modern fighter aircraft, and the Germans had gross numerical superiority: Poland had approximately 400 modern and semi-modern aircraft and another 400 obsolete transport, recon and training aircraft, including 169 fighters, and Germany had approximately 3,000 aircraft albeit only half that number on the Polish front, with most of the remaining similarly as obsolete as the second 400 Polish aircraft. The Polish Air Force development program was slowed in 1926 in the aftermath of Józef Piłsudskis 