I Fight for Mars — E.C. Tubb

Fighting for Mars means a battle with the Lobants, a formidable enemy, robot yet human, whose origins are shrouded in a terrifying Martian mystery. Ace rocketship pilot John Delmar, on a dangerous and unlicensed space light to the fabulous planet, solves the answer to the swarming scourge of Mars in a story that possesses all the compulsion of a three-dimensional horrific...