United Nations forces held a line extending across the peninsula from Inchon (Map 8) in the west by way of Hoengsong to the east coast in the vicinity of Chumunjin. The IX Corps order called for the 1st Marine Division to maintain lateral contact with the 1st Cavalry Division on the left and the 2d Infantry Division on the right. Hongchon and Chunchon, two of the main objectives of Operation RIPPER, lay directly in the path of the IX Corps advance. Both were important communications centers which could be utilized to advantage by the enemy for his forthcoming offensive. The first phase line in the IX Corps zone was ALBANY. The Marines did not need a map to locate an objective just beyond Oum Mountain, a stark 2,900-foot peak about five and a half miles from the line of departure. Distance in this area was conditioned by terrain, and it was a natural fortress of wooded hills and swift streams that confronted the 1st Marine Division. Highways were conspicuous by their absence, and extensive maintenance would be required to utilize the Hoengsong-Hongchon road as a MSR. So few and poor were the secondary roads that it would sometimes prove necessary for vehicles to detour along the rocky stream beds.[120] [120] This section, except when otherwise stated, is derived from the IX Corps _Cmd Rpt_ and the 1stMarDiv _WD_ for Mar 51. The last offensive had not developed major or prolonged resistance at any point. Yet that possibility had to be anticipated by Marine planners. At least the enemy was an old acquaintance--the 66th CCF Army,[121] commanded by General Show Shiu Kwai. The 196th Division was on the left and the 197th on the right, with the 198th in reserve. These units were believed to comprise about 24,000 men. [121] A CCF Army, composed of three or four infantry divisions supported by artillery, is comparable to a U.S. corps. Wednesday, 7 March, dawned cold and clear, with snow falling in the afternoon. The Hoengsong-Hongchon road, winding through Kunsamma Pass, paralleled the boundary between the two Marine assault regiments, the 7th Marines on the left and the 1st Marines on the right. They jumped off to attack in line abreast, employing all three battalions when the broken terrain permitted, while the 5th Marines continued its patrolling activities in the Hoengsong area as Division reserve. The 11th Marines had to ration its artillery ammunition, owing to supply shortages. JOC came to the rescue nobly by ordering MAG-33 to place 11 flights of four planes each at the disposal of DEVASTATE BAKER on D-minus-one. These aircraft reported at hourly intervals to work over targets in the area of the next day’s Marine operations. For the ground forces, it was an embarrassment of riches. They had more air support than they could use at times, and DEVASTATE BAKER sent the surplus to hit reserve concentrations and other targets of opportunity in the enemy’s rear.[122]