Note 69 — Chapter XII · The Mountain Barrier: Part One
Reading edition
At nightfall the 1st Battalion had secured its objective, a ridge 300 yards to the southwest of OP Hill, and all positions were consolidated. During the night the 226th and 465th Field Artillery Battalions placed harassing fire on the enemy positions. In order to shake the morale of the Japanese, the artillery fired its rounds at exact five-minute intervals but scattered the fire throughout the enemy-held area.69