Branching out from sf and f, you might enjoy Bernard Cornwell's Sharpe series. Napoleonic Wars military historical. You may be familiar with the excellent adaptation made with Sean Bean starring as Sharpe. (The DVDs are well worth getting.) Cornwell's history and battles are excellent. Personally, I would read them in publication order rather than chronologically, he's done several back story books with younger Sharpe serving in India, but it's the fighting in Portugal and Spain where the series really sucks you in.

(Sorry no Amazon links, I'm still ticked with them.)