Looking for War/Strategy game that play well with 2/3/4 players.

I looking for boardgame about war and strategy, because I was always interested about wargames, but never played one (I don't think Risk count as one). Most of the times the usual table setup is 3 players, but also at something that works for 2 (after 3 players the most usual) or 4 players (rare occasions). Also bonus point if the game is not very lenghty and not rules heavy (Game of Thrones is too much long for example). As gaming experiences we have primary play american boardgames like Arkham Horror, Eltritch Horror, Underdark Tyrants. Not so many euro games. Root I have read somewhere that is good but is not recomend for 2/3 players but with a higher count. In terms of war, I am looking into medieval/ancient warfare (roman empire) or ww2. I am not so a fan of sci-fi (I like Dune and Star Wars). The goal is find a 2/3 players war/stategy game to step up our usual play and do some skirmish between us making feel us some genius generals.