'Army' in the Bible

Suddenly, there was with the angel a multitude of the heavenly army praising God, and saying,

But God turned, and gave them up to serve the army of the sky, as it is written in the book of the prophets, 'Did you offer to me slain animals and sacrifices forty years in the wilderness, O house of Israel?

I saw the beast, and the kings of the earth, and their armies, gathered together to make war against him who sat on the horse, and against his army.