Note, the 38th parallel slices through the bottom of the map, and thereby separates Haeju, form its port.
MAP 06 Chinnamp'o Region L552-NJ51-8
June 25, 1950 1235
Shortly after noon, at 1235, Premier Kim Il Sung, of North Korea, claimed in a radio broadcast that South Korea had rejected every North Korean proposal for peaceful unification, had attacked North Korea that morning in the area of Haeju above the Ongjin Peninsula, and would have to take the consequences of the North Korean counterattacks.
June 26, 1950
Two LST's from Inch'ŏn joined one already offshore, and on Monday, 26 June, they evacuated Col. Paik In Yup (17th Regiment, and most of two battalions-in all about 1,750 men. The other battalion was completely lost in the early fighting.
The 14th Regiment, 6th Division, turned over the Ongjin Peninsula area to security forces of the BC 3rd Brigade on the second day and immediately departed by way of Haeju and Kaesŏng to rejoin its division.
East of the Ongjin Peninsula, Kaesŏng, the ancient capital of Korea, lay two miles south of the Parallel on the main Sŏul-P'yŏngyang highway and railroad. Two battalions of the 12th Regiment, ROK 1st Division, held positions just north of the town. The other battalion of the regiment was at Yŏnan, the center of a rich rice-growing area some twenty miles westward.
The 13th Regiment held Korangp'o-ri, fifteen air miles east of Kaesŏng above the Imjin River, and the river crossing below the city. The 11th Regiment, of the 1st Division in reserve, and division headquarters were at Suisak, a small village and cantonment area a few miles north of Sŏul. Lt. Col. Lloyd H. Rockwell, senior adviser to the ROK 1st Division, and its youthful commander, Col. Paik Sun Yup, had decided some time earlier that the only defense line the division could hold in case of attack was south of the Imjin River.
Songak-san (Hill 475), a mountain shaped like a capital T with its stem running east-west, dominated Kaesŏng which lay two miles to the south of it. The 38th Parallel ran almost exactly along the crest of Songak-san, which the North Koreans had long since seized and fortified. In Kaesŏng the northbound main rail line linking Sŏul-P'yŏngyang-Manchuria turned west for six miles and then, short of the Yesŏng River, bent north again across the Parallel.