Following relief by the Army unit, the Marine battalion departed at 1015 on the 14th by truck for the Wonsan area. A total of 1395 prisoners had been taken during the 17 days of Majon-ni--a large proportion of them voluntary--and more than 4000 Korean transients screened. Enemy battle casualties were estimated at 525 killed and an unknown number wounded.[188] [188] 3/1 _SAR 7 Oct-25 Nov 50_. General Ruffner, Chief of Staff of X Corps, later commented: “Personally, I always had a feeling that the Marines did a masterful job at Majon-ni. To begin with, it was a very tough assignment and in the second place I always felt that it broke up what remained of organized units in the North Korean Army that would otherwise have given us a tremendous amount of trouble in our backyard at Wonsan. A lot of determined enemy action on our perimeter at Wonsan would have been most disconcerting, troublesome, and unquestionably slowed down our subsequent movement to the north.” MajGen C. L. Ruffner ltr to MajGen E. W. Snedeker, 13 Jan 56. Losses of the Marine battalion numbered 65--16 KIA, 4 DOW and 45 WIA. Non-battle casualties were remarkably low, owing to strict enforcement of sanitary and health regulations.[189] [189] 3/1 _SAR_ 7 _Oct-25 Nov 50_, 7. The vulnerability of a tenuous MSR must also be taken into account, and casualties of nine killed and 81 wounded or injured were incurred by Marines escorting supply convoys through Ambush Alley. _Movement of 1st Marines to Chigyong_ From the 1st Marines in the Wonsan area to the 7th Marines leading the northward advance, a distance of more than 130 road miles separated the elements of the 1st Marine Division. But the arrival of more U. S. Army units made possible a first step toward concentration. On 29 October the 17th RCT of the 7th Infantry Division had begun landing at Iwon (see Map 2), about 60 air miles northeast of Hungnam. Other units and reinforcing elements followed until all had completed unloading by 8 November--a total of 28,995 troops, 5924 vehicles, and 30,016 short tons of cargo.[190] [190] ComPhibGruOne, “Operations Report,” 13–14; X Corps _WD_, 29 Oct 50; X Corps _POR 35_. Transports had been sent by CTF-90 on 31 October to Moji, Japan, for the first units of the 3d Infantry Division. The 65th RCT landed at Wonsan on 5 November, but it was not until the 18th that the last elements arrived.[191] All four of the major units of X Corps--the two Army divisions as well as the 1st Marine Division and I ROK Corps--were then in the zone of operations, even though dispersed over a wide area. [191] ComPhibGruOne, “Operations Report,” 14–15; X Corps _WD_, 5 Nov 50; X Corps _POR 40_.