The cover of ACTION COMICS #18 shows Superman dive-bombing the enemy during the second World War.
I'd say that bomb would probably do a lot more damage than the rifle-caliber machine guns that Captain Marvel was shown shooting on the cover of WHIZ #12.
Like WHIZ COMICS, SUPERMAN sometimes showed things on the cover that were nowhere to be found in the stories inside. I think this scene of Superman with a bomb was another one of those things.
Apparently the artwork for this issue was also used for fan pictures during this period. Here is a somewhat faded copy.
I prefer the comic book version.
"Captain Marvel Rides The Engine Of Death" ( WHIZ COMICS #12 ):
http://bennypdrinnon.blogspot.com/2014/06/captain-marvel-rides-engine-of-death.html
SHAZAM by Chip Kidd:
http://bennypdrinnon.blogspot.com/2013/03/shazam-by-chip-kidd.html
A
