Joshua 5:4

5:4 This is why Joshua had to circumcise them: All the men old enough to fight when they left Egypt died on the journey through the desert after they left Egypt.

Joshua 8:22

8:22 At the same time the men who had taken the city came out to fight, and the men of Ai were trapped in the middle. The Israelites struck them down, leaving no survivors or refugees.

Joshua 10:25

10:25 Then Joshua said to them, “Don’t be afraid and don’t panic! Be strong and brave, for the Lord will do the same thing to all your enemies you fight.