Superman slugging saboteurs and helping the war effort is always classic.

This one is about saboteurs in a torpedo plant. Lois Lane starts snooping around and gets caught. The saboteurs attempt to get rid of her in an original way, but Superman arrives in the nick of time (surprise!) and saves the day and Lois as well.

Fear of sabotage seems to be an overriding theme in the cartoons and films of the WWII era. I wonder how many actual cases of sabotage there were? I wonder how many bosses got rid of employees they didn't like that way? I also wonder how the unions fared during that time? Interesting to speculate about anyway. As to the cartoon, you'll find it entertaining and somewhat educational.