Fightin' Marines #21

This issue contains a main story titled "Fightin' Marines" in which PFC Harper is spotted by the Reds and becomes suspicious of his squad's movements; when red artillery zeroes in on their location, a truck heading for the Ozark is destroyed, and the soldiers must work to restore their reputation and effectiveness. The issue also includes an educational feature "Ballistics Talking," in which a pistol instructor explains forensic techniques for identifying firearms used in crimes, covering topics such as fingerprint examination, cartridge case analysis, and bullet trajectory determination.