Old Model Status New Model Status
Hawker Hurricane I outperformed Hawker Hurricane II slow in arriving
Curtis Tomahawk production ended Curtis Kittyhawk few arriving
Martin Maryland production ended Martin Baltimore few arriving,
Bristol Blenheim IV engine troubles Douglas Boston engine troubles
One positive move was the arrival of Consolidated Liberator and Handley Page Halifax heavy bombers in the Middle East. They were much more capable than the older Vickers Wellington medium bombers. They belonged to the original twin-engined heavy bomber category that had gradually become obsolescent. This is based on the account in Vol.III of the Official History.