If, for example, the trumpet makes an unclear sound, who will get ready for battle?

They had breastplates like iron breastplates, and the sound of their wings was like the noise of many horse-drawn chariots charging into battle.

The beast was permitted to go to war against the saints and conquer them. He was given ruling authority over every tribe, people, language, and nation,

Or what king, going out to confront another king in battle, will not sit down first and determine whether he is able with ten thousand to oppose the one coming against him with twenty thousand?

Now the locusts looked like horses equipped for battle. On their heads were something like crowns similar to gold, and their faces looked like men’s faces.

When they have completed their testimony, the beast that comes up from the abyss will make war on them and conquer them and kill them.

So the dragon became enraged at the woman and went away to make war on the rest of her children, those who keep God’s commandments and hold to the testimony about Jesus. (12:18) And the dragon stood on the sand of the seashore.

For they are the spirits of the demons performing signs who go out to the kings of the earth to bring them together for the battle that will take place on the great day of God, the All-Powerful.

Then I saw the beast and the kings of the earth and their armies assembled to do battle with the one who rode the horse and with his army.

and will go out to deceive the nations at the four corners of the earth, Gog and Magog, to bring them together for the battle. They are as numerous as the grains of sand in the sea.