The B-17 Expansion Squadron rules forThrough Hell and Back ww2 bomber game.

About Through Hell and Back: B-17 Expansion, from BoardGameGeek:

Climb up and strap into the B-17. This expansion for Through Hell and Back includes; 9 new missions with custom artwork and new locations. A V-1 rocket facility is in France, and refinery and chemical plants are in Germany. 9 Historical bomber squadron cards from the 447th BG. Escort cards. P-38s make their entrance into the game. 10 Novice crew cards. 10 Veteran crew cards. A new system for having squadron mates fly with you. 1 game board featuring a B17 from the 447th bomb group. -description from the designer