Galactic Patrol

Galactic Patrol is the third book in the Lensmen stories, and the first book to feature Kimball Kinnison, the action hero of several books in the series. It chronicles the beginning of Kinnison's adventures, starting with graduation from the Galactic Patrol Academy and becoming a Lensmen. Kinnison then pursues the Boskonians, a group of galactic pirates who have armed their ships with explosive artillery and are reeking havoc. - Summary by Harley James