There a couple Nero Wolfe stories that take place during the war. Archie actually leaves Wolfe and is in the army.
“Not Quite Dead Enough” and “Booby Trap”
According to IMDB, this film is set in 1938. I am not sure whether this is actually established in the film, or if it is just a reasonable guess. The fashions look a bit too 1940s for 1938, but that’s not really conclusive.
I’ve wondered how the creators of Superman handled this. Even with his self-imposed prohibition against killing, he could have gone onto the battlefield and disabled all of the enemy’s heavy equipment. So did D.C. Comics run “nonwar” stories for the duration?
P.S. I do VAGUELY remember a 1970’s D.C. comic where Superman went to Vietnam, and did things like - dig massive trenches to block Vietcong attacks.
Didn’t radio Superman fight Nazi spies in America during WWII?
IIRC, they got around this by drafting Clark Kent, who failed the eye exam by reading the different eye chart in the next room through the wall by mistake.
He still did his part by going after spies and saboteurs.
Superman often fought the Nazis during WWII, but wasn’t powerful enough to change the course of the war. Remember, the early Superman didn’t have the powers that he later did – he couldn’t fly, for instance. So he had the issue of trying to get to Europe or the Pacific Theater. Since Clark Kent was deemed unfit for combat due to poor vision (he accidently used his x-ray vision and read the eye chart in a different room), there was the issue of getting him to the campaign. So he stayed in the US and fought foreign agents and saboteurs.
Here’s him fighting a Japanese plane from 1942
Christmas Story obliquely mentions WW2 by having a lot of extras walking around in military uniforms which would place it 1940 during the first American peacetime drafts when a lot of Americans were being drafted and then coming home for Christmas leave.
They drafted him after he failed the eye exam? 
My college Astronomy professor was declared 4F because he burned a retina staring at the Sun when he was a child. He spent WWII working in an aircraft plant, installing machine guns in B-24s.
No. He was declared 4F.
That makes sense.
You’d get your draft notice and then go in for an exam: eyes, number of teeth, hemorrhoids, flat feet, etc. could fail you out.
Mad Magazine had a good joke where they had a parody 80’s Beetle Bailey strip where Beetle and Sarge are at the Vietnam War Memorial as part of an event and Sarge turns to Beetle and says “What’s Vietnam?”
I believe the closest actually BB came to name checking a war was talking about Homeland Security and “Terror Levels” during the 00’s.
MAD also had an article in which cartoons were given appropriate sound effects. Beetle was shown bashing a Vietnamese over the head to “KONG!”
MAD also had a Beetle Bailey spoof where Sarge pins Beetle forcibly to the ground to pull his hat off so that he can see Beetle’s whole face. Beetle has PEACE NOW tattooed on his forehead.
(At least, I think it was “PEACE NOW”. It was some anti-Vietnam War slogan. It’s been awhile.)
((Man! I used to know this stuff!))
Thank you for the answers about Superman. Now maybe I can help too.
Sidechat, but what was up with those weird Lieutenant helmets they wore in Beetle Bailey that were half red and and half white? Was that ever an actual thing I never saw those in any military event ever.
Stout only wrote one other Wolfe case during the war, “Invitation to Death” later published as “Cordially Invited to Meet Death.” I haven’t read it in a long time but I’ll bet that Archie was complaining that he couldn’t get sent overseas in that one too.
All of these were novellas. Stout didn’t write a single Wolfe novel during the war, devoting himself to writing propaganda.
There was a fairly recent strip that alluded to the Mideast conflicts (and referenced a Leonard Bernstein operetta for some reason):
(sorry for the cropping - couldn’t find a better-quality image)
PG Wodehouse wrote Jeeves and Wooster stories across two world wars, and IIRC, there’s exactly one story that mentions either.