 The notion for a single team between the two cities was revived, when for one season in 1943, forced to do so by player shortfalls brought on by World War II, the two clubs temporarily merged as the Philadelphia-Pittsburgh "Steagles".The league only approved the merger for one year; Pittsburgh was willing to merge again for 1944 but not Philadelphia.This forced the Steelers to merge with the Chicago Cardinals (as Card-Pitt) for 1944.