Comment Missing option: Counterfactual (Score 1) 236
In particular, I like ones like Harry Turtledove's oeuvre, S.M. Stirling's Nantucket series and various other works, the 1632niverse, and to go way back, L. Sprague de Camp's Lest Darkness Fall. (I realize some of these are more military than others, but you know what I mean here.)