These intelligence estimates were accepted by Lieutenant Colonel Ridge as the basis for his planning and troop dispositions. As the main bastion of defense, the tied-in sectors of How and Item Companies were extended to include the south and southwest sides of the perimeter--nearly one-third of the entire circumference--in a continuous line 2300 yards in length, or more than a mile and a quarter. Each platoon front thus averaged about 380 yards, which meant that supporting arms must make up for lack of numbers.[435] [435] This section, unless otherwise noted, is based upon the following sources: 3/1 _SAR 26 Nov-15 Dec 50_; Ridge, _Notes_; Maj A. J. Strohmenger ltr to Col T. L. Ridge, 17 Aug 55; Corley narrative; Narrative of Maj J. R. Fisher, n. d.; Simmons Comments. East Hill, considered the second most likely point of enemy attack, was to be assigned to George Company on arrival. Captain Sitter’s outfit had orders to depart the Chigyong area on the morning of the 28th, so that it could be expected at Hagaru before dark. The southeast quarter of the perimeter, between East Hill and the left flank of How Company, was to be held by the following units: (1) Weapons Company (less detachments reinforcing the rifle companies and its 81mm mortars emplaced near the battalion CP) manning a road block on the route to Koto-ri and defending the south nose of East Hill; (2) Dog Company, 1st Engineer Battalion (less men at work on the airstrip), occupying the ground south of the concrete bridge; and (3) Dog Battery, 2d Battalion, 11th Marines, which had the mission of covering 75 per cent of the perimeter with observed indirect fire and 25 per cent with direct fire. These dispositions left a gap between Weapons Company and the engineer and artillery units on the west bank of the Changjin River. But this stretch of frozen marshland was so well covered by fire that an enemy attack here would have been welcomed. The first reports of the CCF onslaughts at Yudam-ni and Fox Hill, as interpreted by Lieutenant Colonel Ridge, “clearly indicated that no time was to be lost at buttoning up the Hagaru perimeter.” He called on Colonel Bowser, the Division G-3, on the morning of the 28th and recommended that an overall defense commander be designated with operational control over all local units. Ridge also requested that George Company and the 41st Commando be expedited in their movement to Hagaru. Before a decision could be reached, General Smith arrived by helicopter and opened the Division CP at 1100. A Marine rear echelon had remained at Hungnam to cope with supply requirements. Colonel Francis A. McAlister, the G-4, left in command, accomplished during the forthcoming campaign what General Smith termed “a magnificent job” in rendering logistical support.[436] [436] Smith, _Notes_, 695–696; CG 1stMarDiv msg to All Units, 1015 28 Nov 50.