Basically there are:

roman empire bros;

Napoleonic wars bros (aka napoleon simps);

People that thinks that having 4000 hours into EU4/HOI4/insert paradox game here makes him a genious of strategy and war economy;

Weebs and edgy teenagers obcessed by ficticious weapons/ unpractical fancy or exotic weapons that nobody uses anymore;

“No guys trust me, i just like the tanks, the weapons, the planes and the strategys used by the third reich, i am not an nazi bro trust me bro”.

Rascist assholes who think that a bunch of white people with fucking guns beating natives with spears and bows is peak strategy;

Sun Tzu memers who never actually read the book and only use his name on youtube comment memes.