In 1965, we learned Marvel's WWII combat heroes saw action in the Korean War!
This tale from Sgt Fury and His Howling Commandos Annual #1 (1965), gives the details...
We'll observe, Commie...TOMORROW!
In the 1960s, Marvel's Annuals were a mixed bag.
Unlike DC's 80-Page Giants which were all-reprint, they combined a new lead story with reprints and, sometimes, behind-the-scenes featurettes and pin-ups into a 72-page package (which reduced over several years down to 68 pages) for the same 25₵ price as the aforementioned Giants.
This Stan Lee-scripted, Dick Ayers-penciled, Frank Giacoia-inked tale ("Frankie Ray" was a pseudonym) covered a major, but untold, event in the group's history...their only battle during the Korean War!
And you'll discover why...tomorrow!