Thanks for the advice, Elmayerle!
But first the F4CF-2 with the Merlin engine. Especially built for the UK and added to several FAA-squadrons. A couple of the F4CF-2's were lent to the USAAF, when participating in Operation Torch. They had still their tail-hooks, because they came from British carriers. Here is one from 5th FS in 1943.
The F4CF-3 was a success in his double-rol as fighter/bomber, so the USAAC ordered 50 P-37C and they entered service begin 1943. Here is one from the red parrot squadron in 1944.
regards
Lauhof