issue #3 (May 1954). The character has since appeared in series from Eclipse Comics, Marvel Comics' Epic imprint, and DC Comics through at least the 1990s. Kubert in the late 1950s unsuccessfully attempted to sell Tor as a newspaper comic strip. The Tor samples consisted of 12 daily strips, reprinted in six pages in Alter Ego vol. 3 #10 and later expanded to 16 pages in DC Comics' Tor #1. He contributed work to Avon Periodicals, where he did science-fiction stories for Strange Worlds and other titles. For EC Comics, Kubert drew a few stories for Harvey Kurtzman's Two-Fisted Tales alongside EC stalwarts Wally Wood, Jack Davis, and John Severin. DC Comics and Sgt. Rock Beginning with Our Army at War #32 (March 1955), Kubert began to freelance again for DC Comics, in addition to Lev Gleason Publications and Atlas Comics, the 1950s iteration of Marvel Comics. By the end of the year he was drawing for DC exclusively. DC editor Julius Schwartz assigned Kubert, Robert Kanigher, and Carmine Infantino to the company's first attempt at reviving superheroes: an updated version of the Flash that would appear in Showcase #4 (Oct. 1956). The eventual success of the new, science-fiction oriented Flash heralded the wholesale return of superheroes, and the beginning of what fans and historians call the Silver Age of Comic Books. In the coming years, Kubert would work on such characters as the medieval adventurer the Viking Prince and features starring Sgt. Rock and The Haunted Tank in the war comic G.I. Combat. He and writer Gardner Fox created a new version of Hawkman in The Brave and the Bold #34 (Feb.–March 1961) with the character receiving his own title three years later. Kubert's work on Hawkman and in G.I. Combat would become known as his signature efforts. Kubert's main collaborator on the war comics was writer/editor Kanigher. Their work together on Sgt. Rock is considered a memorable contribution to the comics medium. They introduced Enemy Ace in Our Army at War #151 (Feb. 1965). From 1965 through 1967 he collaborated with author Robin Moore on the syndicated daily comic strip Tales of the Green Beret for the Chicago Tribune. Kubert served as DC Comics' director of publications from 1967 to 1976. He made the Unknown Soldier the lead feature of Star Spangled War Stories with issue #151 (June–July 1970) and initiated titles based on such Edgar Rice Burroughs