Capitalizing on a psychological advantage, Company A wheeled southward to sweep the crest. Fox, using a skirmish line of only 20 men, assaulted Hill 143 and took the peak against light resistance. A quick call to Newton brought Stevens immediate permission for maximum exploitation.

The 3d Platoon attacked Hill 147 vigorously, and though a few Red soldiers fought to the bitter end, the majority again chose to flee. The high ground was taken easily.

As the Marines moved over the crest of 147, they saw 150 enemy troops in formation halfway down the western slope. The withdrawal commenced in an orderly column of fours but the formation broke down quickly under Marine fire and turned into a routed mob.

Fox turned his attention to Hill 153, Obong-ni’s crowning peak, reasoning that it would be the logical place for the enemy’s last-ditch stand. But it was the same old story when the 3d Platoon rushed to the summit—abandoned weapons and equipment, a few scattered dead, and blasted foxholes. There was a variation, however, when a supposed clump of scrub pines arose from the reverse slope and rushed downward in headlong flight. The Leathernecks were reminded of Birnham Wood in Shakespeare’s Macbeth as the camouflaged North Koreans disappeared with the agility of mountain goats before Marine marksmen could score more than a few hits.

While the 1st and 2d Platoons consolidated the central peaks, the 3d combed the southern reaches below Hill 153 without incident. The 1st Platoon, Able Company Engineers, patrolled the swampland south of the ridge and secured Fox’s left flank with a minefield extending from the southern crest to the valley below and eastward across the swamp. By midafternoon all of Obong-ni Ridge belonged to the Brigade.

Supporting Arms Clear the Bulge

At midnight, 17 August, Lieutenant Colonel Murray had issued 3/5 a warning order for continuing the attack on the 18th. Shortly after dawn, Taplett and his two company commanders, Fegan and Bohn, visually reconnoitered Hill 207—Objective Two—from vantage points north and south of the MSR. Then, while the battalion commander set up his OP on the northern part of Obong-ni Ridge, Companies G and H advanced to an assembly area at the base of the Ridge.[318]

[318] This section is derived from: Annexes Easy and How to Brig SAR; Taplett, 20 Apr 54; and Fegan and Bohn, 17 Apr 54.

Taplett called down heavy artillery, air, and mortar preparations on Objective Two. Occasionally he shifted fires to blast large groups of enemy fleeing to Hill 207 from Company A’s advance on Obong-ni Ridge.