. "HMS Mars was a battlecruiser of the Royal Manticoran Navy. By 1920 PD, it was part of Rear Admiral Janice Smithwell's Seventeenth Battlecruiser Squadron in Task Force 34, fighting in the Second Battle of Marsh. (HH10)"@en . . "HMS Mars (battlecruiser)"@en . . . . "HMS Mars was a battlecruiser of the Royal Manticoran Navy. By 1920 PD, it was part of Rear Admiral Janice Smithwell's Seventeenth Battlecruiser Squadron in Task Force 34, fighting in the Second Battle of Marsh. (HH10)"@en . .