The 1970s weren't really a high point for DC's superhero comics, but the decade did see a blossoming of other genres: such as Westerns, romance, horror, and war.
Everyone's heard of Sgt. Rock, but fewer remember the 26 issues of Men of War, whose star was Ulysses Hazard (now, THAT is a comic book name!), codenamed "Gravedigger".
Though stricken by polio as a child, U fought it to become a determined and able-bodied adult. Having joined the Army to fight the Nazis, predjudice confined him to menial tasks like gravedigging, until he slipped past presidential security to take up the matter with FDR himself. FDR, understandably impressed, made him a Captain, gave him "Gravedigger" as a codename, and sent him out as a one-man special ops force. Ulysses Hazard was the bomb, folks.
Do you remember the Vertigo series Angeltown? That was supposed to star Ulysses Hazard, but he was creator-owned and so couldn't be used. Creator's right are nice for creators, but they consign a lot of their creations to become mere historical footnotes rather than living legends.
Oh, and Gravedigger was created by David Michelinie. Recognize the name? Same guy who wrote the story that revealed how Black Manta got his name.