Agreed with all this, but voted Tactician.I’d be fine with tactician or marshall, but I think warlord is best. There are those who don’t think it fits, but at this point it’s the name that people associate with the concept. Whether folks like the concept or hate it, warlord is the name they know it by.
Oh, doesn't it.Warlord. The reason is the name doesn't gate other the different styles of "leadership" (tactical, inspirational, strategic, commanding, terrifying, etc.)

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.