Eventually these became separate ranks superior to a Captain. Until the Civil War, the United States Navy had no Admirals, only Commodores (like Commodore Perry who opened Japan, 1853-1854). A Commodore flew a distinctive flag, a variation on the "commissioning pennant" flown by a sailing ...
Lead your unit in tightly formed ranks to victory while enemies are running around you disorganised and disoriented like headless chickens! Establish a siege camp, cover it with palisade walls and start making weapons of war (trebuchets, battering rams, mantlets) Breach enemy walls with trebuchet...