While fighting raged in an arc from south to west on the 27th, another danger area was discovered to the north and northeast, completing a vast semicircle of known CCF concentrations in proximity to Yudam-ni. A patrol from Company D of 2/7, moving over North Ridge along the west coast of the reservoir, ran into heavy machine-gun and mortar fire about 4000 yards from the village. Marine air struck at the entrenchments of an estimated enemy company, and at 1645 the patrol withdrew with several casualties to Company D’s lines on the southern tip of North Ridge. At dusk on the 27th a general calm settled over Yudam-ni, broken only occasionally by scattered exchanges of small-arms fire. The main Marine attack had netted about 1500 yards, placing 2/5 on the objective originally assigned by the regimental commander, Lieutenant Colonel Murray. That the Chinese did not allow this battalion to advance three more miles, to its new objective and into hopeless entrapment, seems inconsistent in view of the CCF plans for the night of 27–28 November. The auxiliary attack by 3/7 won 1200 more yards of the crest of Southwest Ridge, and the occupation of Hill 1403 by How Company of that battalion represented a gain of about 2000. In a few hours, the Marines would give thanks that their successes on 27 November had been modest ones. _Marine Dispositions Before CCF Attack_ The units of Yudam-ni will be listed counter-clockwise, beginning with those on North Ridge, according to the positions they occupied around the perimeter on the night of 27–28 November. North Ridge, bounded on the east by the reservoir and on the west by the valley separating Northwest Ridge, lay closest to the village and was therefore of immediate tactical importance. Facing this hill mass from Yudam-ni, one sees four distinct terminal heights: Hill 1167 on the right, Hills 1240 and 1282 in the center, and the giant spur of Hill 1384 on the left. Companies D and E of the 7th Marines, occupied Hills 1240 and 1282 respectively. Since the combined front of these two units was a mile wide, they concentrated on their assigned hilltops and relied on periodic patrols to span the gaping, 500-yard saddle between. Although both flanks of each company dangled “in the air,” they were backed by two-thirds of the 5th Marine Regiment in the valley of Yudam-ni.[381] [381] This section is derived from: 5thMar _SAR_, 19–20; 7thMar _SAR_, 21; 1/5 _SAR_, 11–12; 2/5 _SAR_, 15–18; 3/5 _SAR_, 13.