This is not correct... The Polish Air Force and the state of Poland are created after WW1.
Wikipedia: 1918–1930
"Albatros D.III (Oef) fighters of the Polish 7th Air Escadrille at Lewandówka airfield in the winter of 1919-1920
Military aviation in free Poland started even before the officially recognised date of regaining independence (11 November 1918). Poland was under German and Austro-Hungarian occupation until the armistice, but the Poles started to take control as the Central Powers collapsed. Initially, Polish air force consisted of mostly German and Austrian aircraft, left by former occupants or captured from them, mostly during the Greater Poland Uprising. These planes were first used by the Polish Air Force in the Polish-Ukrainian War in late 1918, during combat operations centered around the city of Lwów (now Lviv).[2] On 2 November 1918 pilot Stefan Bastyr performed the first combat flight of Polish aircraft from Lviv.[3]
When the Polish-Soviet War broke out in February 1920, the Polish Air Force used a variety of former German and Austro-Hungarian, as well as newly acquired western-made Allied aircraft. Most common at that time were light bomber and reconnaissance aircraft, among most numerous were French Breguet 14 bombers, German LVG C.V reconnaissance aircraft, British Bristol F2B scouts and Italian Ansaldo Balilla fighters.[4]
American volunteers, Merian C. Cooper and Cedric Fauntleroy, fighting in the Polish Air Force as part of the Polish 7th Air Escadrille, known as the "Kościuszko Squadron" " ...
Tail insignia of the Kościuszko Squadron
After the Polish-Soviet War ended in 1921, most of the worn out World War I aircraft were gradually withdrawn and from 1924 the air force started to be equipped with new French aircraft. In total in 1918-1924 there were 2160 aircraft in the Polish Air Force and naval aviation (not all in operable condition), in which there were 1384 reconnaissance aircraft and 410 fighters.[4] From 1924 to 1930 the primary fighter of the Polish Air Force was the SPAD 61 and its main bombers were the French produced Potez 15 and the Potez 25, which was eventually manufactured in Poland under license from Aéroplanes Henry Potez.
The first Polish-designed and mass-produced aircraft to serve in the country's air force was a high wing fighter, the PWS-10, first manufactured in 1930 by the Podlasie Aircraft Factory....
This is in short... There is a book on the market about Flying in Poland.
https://www.amazon.de/Kosciuszko-We-Are ... +in+Poland