He was with David at Pas-dammim when the Philistines gathered there for battle. At the place with a field full of barley, the troops fled from the Philistines.

1 Samuel 17:1
Now the Philistines gathered their forces for war at Socoh in Judah, and they camped between Socoh and Azekah in Ephes-dammim.

2 Samuel 23:10
but Eleazar stood his ground and struck the Philistines until his hand grew weary and stuck to his sword. The LORD brought about a great victory that day. Then the troops returned to him, but only to plunder the dead.

2 Samuel 23:11
And after him was Shammah son of Agee the Hararite. When the Philistines had banded together near a field full of lentils, Israel's troops fled from them.

2 Samuel 23:12
But Shammah took his stand in the middle of the field, defended it, and struck down the Philistines. So the LORD brought about a great victory.

1 Chronicles 11:14
But Eleazar and David stationed themselves in the middle of the field and defended it. They struck down the Philistines, and the LORD brought about a great victory.

He was with David at Pasdammim, and there the Philistines were gathered together to battle, where was a parcel of ground full of barley; and the people fled from before the Philistines.