 Complete the following phrase:  On 11 July 1943, Tucker, who was by now a full colonel, led his troops in the Allied invasion of Sicily. There the American ground and sea forces, mistaking the 504ths aircraft for enemy planes, fired on the formations, resulting in the catastrophic loss of 23 aircraft, numerous casualties, and the scattering of troops all over the island. Tucker also led the 504th PIR during the Italian Campaign at Salerno and 