Maybe using GURPS?  Allies; small team, like a tank, light bomber, PT boat or Submarine?

It's an idea I've had mulling about for a long time.

If you build it they will come.

I haven't played GURPS since I quit it in 2015, but I know when I did there was some amount of fuss over whether 3 or 4 was being played. Might do well to clear that up for potential players (In particular I seem to recall Vehicles being ran quite differently between the editions.)

Back in the time, there was a game named Behind Enemy Lines that was for comando ops in WWII.

I have my doubts it can be found today, though...

Thanks Dan Fox...

I think I still have my copy of that game somewhere in storage...

I had some success running a WWII game on another site (many, many moons ago) with d20 Modern & the d20 Past supplement, and I created a bunch of files for European Theater weapons and vehicles. I'd be happy to give you the files I created (I think I still have them on my home PC) if you want to go that route.

Always a fan of these sorts of games.

You can mark one down for interest.

Would these be more personal stories focusing on the individuals trying to make it through the war? Or the story of their tank, plane, etc?

Would a resistance / partisans game be a possibility?

In reply to Arkyn (msg # 1):

I would be interested in such a game. Or World War I. Or Weird War II. Any war, really. Just sign me up.