This never-reprinted tale is from Toby's John Wayne Adventures #15 (1952), penciled by Mel Keefer. (The other credits are unknown)
You'll note that Wayne is referred to as "John Wayne", not "John Wayne as Sgt Stryker" or some other character he played in movies...or a totally-new character!
The conceit of the 31-issue series, John Wayne Adventure Comics, was that Wayne was always himself in the stories, no matter where or when they were set!
Tales ran the gamut from Wayne in the French Foreign Legion to putting out oil-rig fires to big-game hunting in Africa to tracking spies in Hong Kong, with at least one Western-themed story every issue.
Oddly enough, though there are numerous comic adaptations of Wayne's Western movies, and even a comic based on The Conqueror (where he portrayed Genghis Khan), there are no comics adapting any of his war movies!
