I'm looking for the titles of a military space opera trilogy (I think) that was more or less directly copied from an earlier series on a non-sf military series. My memory is quite vague but I think it was published quite a few years after Dune maybe 80s/90s. It was a fairly big best seller in the UK at least before it was identified as being plagiarised from the earlier series. I think the original was based around the time of the second world war - possibly in the Soviet Union? I think there was a court case resulting in a small amount in royalties being paid to the original author. I'd be interested to know the original books' titles and author as well as any other details.