Heath co-created with writer-editor Robert Kanigher the feature "The Haunted Tank" in "G.I. Combat" #87 (May 1961). Heath stated in a 1999 interview that "I didn't like "The Haunted Tank" "G.I. Combat" as much ... I liked less because there was always the same four characters – J.E.B. Stuart plus his three buddies – virtually the same story every issue: He'd be talking to this ghost, over and over again. I couldn't believe kids kept wanting to look at it." Also with Kanigher, Heath co-created and drew the first issues of DC's "Sea Devils", about a team of scuba-diving adventurers. DC Comics writer and executive Paul Levitz described Heath in 2010 as "[A master of texture and lighting and meticulous levels of detail. Given the chance he'd draw every barnacle on a sunken pirate ship." Several of Kanigher's characters were combined into a single feature titled "The Losers". Their first appearance as a group was with the Haunted Tank crew in "G.I. Combat" #138 (Oct.–Nov. 1969) drawn by Heath.