battalia

noun

1. (obsolete, uncountable)Order of battle; disposition or arrangement of troops or of a naval force, ready for action.

   “[…]but we find, by a sad experience, that few questions are well stated; and when they are, they are not consented to; and when they are agreed on by both sides that they are well stated, it is nothing else but a drawing up the armies in battalia with great skill and discipline; the next thing they do is, they thrust their swords into one another's sides.”

   “Two rival armies all the plain o'erspread, / Each in battalia rang'd, and shining arms array'd”

2. (countable, obsolete)An army in battle array; also, the main battalia or body of the army, as distinct from the vanguard and rear.

   “Why, our battalia trebles that account”