In the sun-dappled Elysia of the before-times, Kiko and I used to go over to Gabe's house and play a game called Dust. One of the cleanest, most fun wargames of all time, it was a very solid place for Gabriel the Younger to start the hobby. The legibility of the system and the celerity of its resolution - for example, it's played on a massive grid instead of measuring arbitrary distances - means that you can go four player and play two games in an hour and a half. Maybe you haven't played a wargame. Just so it's clear: what I've just described is not a thing. I once played a game of Warhammer 40k with four people that lasted twelve hours. I didn't play again for about fourteen years. I liken it to when one of those big snakes eats a gazelle.
