Eric Frank Russell’s 1957 Wasp is a standalone science fiction novel.
Terra and the Sirian Combine have been at war for a year. Humanity enjoys a significant technological edge, but the Sirians outnumber the Terrans ten-to-one. The solution, as far as Terra’s High Command is concerned, is to adopt tactics in which the weight of numbers cannot come into play.
James Mowry is given an offer he cannot refuse. He is to become a wasp.