Above: A Lancaster takes evasive action while a Mustang shoots down the attacking Fw-190D I. Why it is possible:   We have been told that heavier bombers are not possible in the Il-2 engine...   The reasons why Il-2 Doesn't support heavy bombers: - Large numbers of AI gunners (often 7 or more per plane) - Large formation (50-1000 aircraft).   Why this doesn't apply to the Lancaster: - Only three gunners (less AI gunners than a He-111!) - Looser formati