"Dummy Bomb Not Quite Such A Dud"
Major Thorpe (writer and artist), Mort Leav (pencils and inks)
Published in Jumbo Comics #73, Mar 1945 - 6 pages
To learn what is going on in a Japanese secret weapons factory in China manned by slave labor, ZX-5 assumes the disguise of one of the foremen. He learns of a major new invention he knows he has to destroy.