The following morning, after departing Wonsan at 0830, the air controller was not needed. Barrow had put into effect a new tactical plan based on the premise that the guerrillas of Ambush Alley would be waiting as usual for the sound of approaching trucks. He prepared a surprise, therefore, by directing his infantry platoons to take turns at leading the column on foot, keeping a thousand yards or more in advance of the vehicles. The scheme worked to perfection as Second Lieutenant Donald R. Jones’ platoon rounded a bend near the scene of yesterday’s ambush and surprised about 70 guerrillas as they were eating. The ambushers had in effect been ambushed. The Marines opened up with everything they had, and only a few of the Reds escaped with their lives. There was no further trouble after the convoy got under way again, arriving at Majon-ni early in the afternoon of 5 November without a single casualty. Losses of 51 killed and three prisoners were inflicted on the enemy. _First Attack on Perimeter_ The supplies were no less welcome than the Marines who brought them, for the CIC team had warned of an attack on Majon-ni at 0100 the following night. Colonel Puller placed Able Company under the operational control of 3/1 for the defense, and the commanding officer assigned the three rifle platoons and their reinforcing elements a sector between How and George Companies on the perimeter. This addition to his strength made it possible for Lieutenant Colonel Ridge to send out his executive officer, Major Reginald R. Myers, in command of a motorized patrol large enough to cope with a reported enemy build-up of 2000 to 3000 men about six miles northwest of Majon-ni on the Pyongyang road. Intelligence received by Corps indicated that this force was assembling in an old mining area, and a 3/1 reconnaissance in force was ordered. The Marine task force, consisting of George and Item Companies, plus elements of Weapons Company, was supported by artillery from Majon-ni. Nothing more formidable was encountered than a few guerrillas firing at long-range, but Myers brought back 81 willing prisoners.[178] [178] 3/1 _SAR 7 Oct-25 Nov 50_, 5; 1stMar _URpt_ (_S-3_) _9_; Ridge ltr, 28 Nov 55; Narrative of Capt H. L. Coffman, n. d.