Here's my take on the problem:

First, shoot the rifleman. Depending on his markmanship, he may be a very serious threat.

Second, shoot the submachinegunner. If he carefully devotes 1-2 magazines to you, your number is going to be up. A bullet from 4" barreled 9 mm. Luger pistol using German military ammo will have velocity of a little more than 1000 fps. at 100 yds. The SMG has a significantly longer barrel so we would expect the velocity to be increased by approximately 200-300 fps at the muzzle, with a retained velocity in the area of say 1150-1250 fps at 100 yds.

The shotgunner is the least threatening. His pattern is likely to be spread over a broad area. I also suspect pellet drop at that range might be a variable the shooter would neglect to address. Assuming a muzzle velocity of about 1300fps, and 00 buckshot (54 grs. at .33" , a popular size, but who really knows what size pellets would be used if for some reason the Germans were using shotguns), the retained velocity might be around 600-900 fps (WAG) making it still dangerous at 100 yds. IIRC, 00 Buckshot has a calculated maximum range (based on Journee's {sp?} formula of 660 yds. I also seem to recall that someone (NRA/Hatcher/?) actually measured the range and found it to be about 500 yds. Even if 1 or more pellets hit you but did not happen to kill you immediately, consider the prospects for wound treatment. Infection would be highly likely, and the treatment available would not seem promising.

Anyway, that's how I see it.

John