I'm an engineer by trade and training, and I'm annoyed at the unrealistic aspects of space warfare that seem to be everywhere in books and in movies. So, in my annoyances I turned to the interweb to find out some answers that I really need to know, and this site just happened to have everything AND have the math and physics to back it up.

http://www.projectrho.com/rocket/rocket3x.html

It's fascinating and totally alien from any form of warfare we currently know. If anything it might perhaps be closest to submarine warfare, and by close I mean close like a mouse is related to us in that it's a mammal.

I like the site because it answers many questions, like "What would a nuke do in space, would it still create an EMP?" and "How useful are lasers?" Things of that sort. Everything is analyzed and a good number of the folks who did the posting were people who have expertise in the systems described.

Definitely worth looking at for anyone who has a desire to write any hard sci-fi that may involve space warfare.