This was the 78-mile main supply route that would soon be claiming its page in history. In only a few weeks it would be known to thousands of Marines as _the_ MSR, as if there never had been another. [Illustration: THE MAIN SUPPLY ROUTE OF THE 1ST MARINE DIVISION November-December 1950 MAP-7 ] Officers and NCOs of the 7th Marines, which was fated to be the first United States unit to defeat the Chinese Communists in battle, were given a verbal preview of the MSR and the part it might play in their future. This was as the result of a flight of inspection made by Major Henry J. Woessner on 30 October, following a briefing at the X Corps CP in Wonsan. The S-3 of the 7th Marines was fortunate enough to arrive just in time to hear the briefing given General Barr by General Almond. Pointing to the map, the X Corps commander indicated that the 7th Infantry Division would push northward to Hyesanjin on the Yalu. Meanwhile the Marines were to head for the border by way of Chinhung-ni, Koto-ri and Hagaru while the 3d Infantry Division took over responsibility for the rear area. “When we have cleared all this out,” concluded General Almond, pointing again to the map, “the ROKs will take over, and we will pull our divisions out of Korea.”[239] [239] Descriptions of the briefing session and reconnaissance flight are based on LtCol H. J. Woessner Comments, 13 Nov 56. At the X Corps CP, Woessner met a U. S. Army liaison officer just returned from the 26th ROK Regiment with a report of that unit’s encounter with Chinese Communists. The ROKs had been north of Sudong when they collided with the new enemy and were pushed back, after taking 16 prisoners. Colonel Edward H. Forney, ranking Marine officer on the X Corps staff, arranged for Major Woessner to make a reconnaissance flight over the Hamhung-Hagaru route in an Air Force T-6. The S-3 saw no sign of enemy troop movements all the way to the northern end of the Chosin Reservoir, but he did not fail to note the formidable character of the terrain through which the new MSR passed. When he returned that evening with his report, Colonel Litzenberg called a meeting of officers and NCOs at the regimental CP. In an informal talk, he told them that they might soon be taking part in the opening engagement of World War III. “We can expect to meet Chinese Communist troops,” he concluded, “and it is important that we win the first battle. The results of that action will reverberate around the world, and we want to make sure that the outcome has an adverse effect in Moscow as well as Peiping.”[240] [240] Litzenberg Comments, 19 Jul 56; Woessner Comments, 13 Nov 56; Maj M. E. Roach Comments, 17 May 56. The quotation is from Litzenberg. _ROKs Relieved by 7th Marines_