Judges 7:16

16And he divided the 300 men into three companies and put trumpets into the hands of all of them and empty jars, with atorches inside the jars.

Judges 7:19

Gideon Defeats Midian

19So Gideon and the hundred men who were with him came to the outskirts of the camp at the beginning of the middle watch, when they had just set the watch. And they blew the trumpets and smashed the jars that were in their hands.

Judges 9:43

43He took his people and divided them into three companies and set an ambush in the fields. And he looked and saw the people coming out of the city. So he rose against them and killed them.
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