Sgt. Rock is a fictional character from the DC Comics universe, first appearing in 1943. He is a tough, no-nonsense sergeant in the U.S. Army during World War II, known for his leadership and bravery. Sgt. Rock often leads a squad of soldiers called the Easy Company, facing various challenges and enemies on the battlefield. The character was created by writer Robert Kanigher and artist Joe Kubert. Over the years, Sgt. Rock has become a symbol of heroism and resilience, appearing in numerous comic book series, graphic novels, and adaptations. His stories often highlight the camaraderie and struggles of soldiers during wartime.