'Mustered' in the Bible

They hired 32,000 chariots, along with the king of Maacah and his army, who arrived and encamped at Medeba. The Ammonites also were mustered and came out to battle from their home cities.

When David learned this, he mustered all of Israel, crossed the Jordan, approached the Arameans, and drew up his forces against them. After David had assembled in battle array against the Arameans, the Arameans attacked him.