During the Masan interlude Colonel S. L. A. Marshall, USAR, arrived as a representative of the Operations Research Office of Johns Hopkins University, which had been employed on military research projects by the Far East Command. Marshall, a well-known military analyst who had written several books about World War II operations, based his studies on personal interviews with scores of participants. The researcher was given a free hand at Masan. Aided by a stenographer, he interviewed officers and men from privates to commanding general. The resulting thousands of words went into a classified report entitled, “CCF in the Attack (Part II), A Study Based on the Operations of the 1stMarDiv in the Koto-ri, Hagaru-ri, Yudam-ni area, 20 November-10 December 1950.” _General Ridgway New_ EUSAK _Commander_ Shortly after arrival at Masan, General Smith called a conference of unit commanders and emphasized that their task was to re-equip, resupply, repair and rehabilitate. Officers and men of replacement drafts were to be integrated and given unit training as soon as possible. Both veterans and newcomers were soon training in regimental areas assigned by Colonel Alpha L. Bowser, the Division G-3, who arranged for a 200-yard rifle range and a mortar range. On 23 December came the news that Lieutenant General Walton H. Walker, the Eighth Army commander, had been killed in a jeep accident. His successor, Lieutenant General Matthew B. Ridgway, USA, had commanded the U.S. XVIII Airborne Corps in Europe during the final operations of World War II. Commencing his flight from Washington on the 24th, he landed at Tokyo just before midnight on Christmas day.[6] [6] Gen M. B. Ridgway as told to H. M. Martin, _Soldier, The Memoirs of Matthew B. Ridgway_ (New York, 1956), 196–211, hereafter Ridgway, _Memoirs_. The new commander’s task was made more difficult by the fact that the Korean conflict, at the end of its first six months, had become probably the most unpopular military venture of American history, both at the front and in the United States. From a mere “police action” at first, the struggle soon developed into a major effort in which the national pride suffered humiliations as a consequence of military unpreparedness. Far from building up the morale of the troops, letters and newspapers from home too often contributed to the doubts of men who asked themselves these questions: “Why are we here? And what are we fighting for?” Some of the answers were scarcely reassuring. It was insinuated, for instance, that Americans were fighting “to make South Korean real estate safe for South Koreans.”