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DC Showcase: Sgt. Rock is an American animated short war superhero film based on the titular character, directed by Bruce Timm, written by Louise Simonson, Walter Simonson and Tim Sheridan, and produced by Warner Bros. Animation and DC Entertainment. The short was included as part of the home media release of Batman: Hush. It is the first DC Showcase installment in eight years since DC Showcase: Catwoman. Wikipedia