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the President SECRET Washington, D.C. 13 December 1950 JOINT DAILY SITREP NO. 154 1 (maps attached) From 0700/12 (EST) to 0700/13 (EST) From 2100/12 (Korea) to 2100/13 (Korea) 1. Situation in Brief: Increased hostile activity opposite the 5th ROK Division north of Chunchon resulted in stepped-up air attacks, especially against enemy ele- ments utilizing pre-war defense positions along the 38th parallel. Gains of the 5th ROK Division were limited to 1,000 to 2,000 yards during 12 Decem- ber, because of the moderate to stubborn resistance from an estimated enemy regiment. Near Yongpyong, 3 patrols of the 24th U.S. Infantry Division were forced to withdraw by enemy units varying in size up to company strength. The 25th U.S. Infantry Division and the 1st ROK Division, maintaining de- fense positions on the Army left flank, each reported 1 minor skirmish. The only hostile encounter in the U.S. X Corps sector consisted of an attack at 0720/13 (KT) by an estimated enemy battalion, which was launched by 40 to 80 CCF troops dressed in U.S. parkas, against elements of the 7th U.S. Infantry Division 6 miles west of Oro. The enemy withdrew at 1050. The 7th U.S. Marine Regiment completed outloading at Hungnam, while the remainder of the 1st U.S. Marine Division continued to embark. Other X Corps units, except those currently reorganizing or embarking at Hungnam, maintained a perimeter defense around the Hamhung-Hungnam area. Task Force 77 and CTG 96.8 planes continued to attack enemy ground troops and military installations with good results. Surface ships conducted fire mis- sions on the east coast, shelling a truck convoy. Naval air flew 429 sorties on 12 December, and U.N. aircraft under FEAF control flew a total of 651 sorties, including 165 transport, 39 fighter control, 19 reconnaissance, and 428 combat. (FECOM)(SECRET) 2. Weather: Mostly overcast conditions improving in south Korea after midnight and improving in north Korea after 0600/13 (KT). Central Korea remained generally overcast throughout the period. Visibility was generally good with some restriction in haze and smoke in the valleys. Temperature varied between 350 F and 550 F with colder temperatures occurring in the mountains. Forecast: A frontal passage during the period is anticipated generally to improve cloud conditions throughout Korea particularly in the west. Visi- bility will be generally restricted in haze and smoke in the valleys. (FEAF) (SECRET) DECLASSIFIED E.O. 12065, Sec. 3-402 DOD Directive 5100.30, June 18, 1070 SECRET 2117181 B NLT- HL NARS, Date