An Innovation Used to Great Effect by the Assyrian Military

An innovation used to great effect by the Assyrian military was

A) horse-drawn chariots that provided a raised platform from which to fight.
B) light-unit, heavily armored infantry formations armed with both swords and spears.
C) leather-clad infantrymen armed with broadswords.
D) the use of military strategists whose job it was to select the field of battle.
E) selection of officers through use of the ballot, ensuring that those fighting respected their leaders.