Complex sentence: Bombardier schools of the Gulf Coast Air Corps Training Center and the West Coast Air Corps Training Center included the GCACTC's Big Spring Army Air Force Bombardier School--its "first class of cadets (118 men) arrived Sept.16,1942".
Split into simpler sentences: Bombardier schools of the Gulf Coast Air Corps Training Center and the West Coast Air Corps Training Center included the GCACTC's Big Spring Army Air Force Bombardier School. Its "first class of cadets (118 men) arrived Sept.16,1942".