Humans boarding alien starships

[Tim Hain]

I am looking for a story in which technologically inferior humans are capturing an alien race's starships by boarding them in space, then dividing the crew between the ships and going off to hunt more starships. They are trying to build enough strength to defeat the aliens. They rendezvous every generation to count up their numbers, plot strategy, and swap crew to prevent inbreeding. I think I read this 30-40 years ago in a collection of short novels. Any help would be appreciated!

 

[Extollager]

Welcome, Tim, and good luck with your query. It sounds interesting.