Cover code #47162 indicates a 1974 printing. Novel first published in 1953 as "Star Rangers". First in the "Central Control" sequence, which also includes the 1955 novel, "Star Guard."

Kana Karr was a young swordsman, a wielder of a medieval weapon in a super-scientific galaxy of limitless destruction. As an Earthman, he was nothing more than a hired mercenary sent to kill or be killed at the command of the oppressive Central Control. ~ ~ On a seemingly routine police action to the planet Fronn, Kana learned of a plot that threatened to overturn the balance of power held by the Galactic authority. The liberation of Earth might hinge on the outcome of the plot! ~ ~ Second Ace printing, D-527. cover art by EMSH.