Judges 7:15-16

15When Gideon heard this news about the dream and its meaning, he praised God. He returned to the Israelites' camp. He shouted to his men, ‘Get up now! The Lord has put Midian's army under your power!’

16He divided his 300 men into three separate groups. He gave a trumpet and an empty pot to each soldier. Each man put a burning branch into his pot.