Czerwien
Czerwień Land
In addition to being the name of an ancient city, long since destroyed, Land of Czerwień (Polish: Ziemia Czerwieńska) was the name of a region in the southeast of Poland. See Red Ruthenia.
Most of the Land of Czerwien was seized by the Soviet Union, first in September 1939 during the Soviet invasion of Poland.
Then at the end of World War II, Czerwień became one of the territories annexed by the Soviet Union. The main cities in Czerwień, taken into the USSR and now in Ukraine are Lwow, Kolomea, Kowel, Lutsk, Rovno, Sokal, Stryy, Ternopol, etc. Only a very small part of the original Czerwień territory remains in present-day Poland.
In World War II, one of the squadrons of the Polish Air Force in exile was named No. 309 (Land of Czerwień) Squadron.