Complex sentence: His use of 38 aircraft to move his corps headquarters on the first lift has been criticised; the number of combat troops on the first lift was already restricted due to a decision not to make two drops on the first day.
Split into simpler sentences: His use of 38 aircraft to move his corps headquarters on the first lift has been criticised. The number of combat troops on the first lift was already restricted due to a decision not to make two drops on the first day.