 During the morning of 1 September , Walker weighed the news coming in from his southern front , wavering in a decision as to which part of the front most needed his Pusan Perimeter reserves . Since midnight the NK I Corps had broken his Pusan Perimeter in two places @-@ the NK 2nd and 9th Divisions in the US 2nd Division sector , and the NK 7th Division and NK 6th Division in the US 25th Division sector , below the junction of the Nam and Naktong Rivers . In the US 2nd Division sector North Korean troops were at the edge of Yongsan , the gateway to the corridor leading 12 miles ( 19 km ) eastward to Miryang and the main Pusan @-@ Mukden railroad and highway . 
 During the morning of 1 September , Walker weighed the news coming in from his southern front , wavering in a decision as to which part of the front most needed his Pusan Perimeter reserves . Since midnight the NK I Corps <a href='been_done' title='1'><mark>had</mark></a> broken his Pusan Perimeter in two places @-@ the NK 2nd and 9th Divisions in the US 2nd Division sector , and the NK 7th Division and NK 6th Division in the US 25th Division sector , below the junction of the Nam and Naktong Rivers . In the US 2nd Division sector North Korean troops <a href='uninflect' title='2'><mark>were</mark></a> at the edge of Yongsan , the gateway to the corridor leading 12 miles ( 19 km ) eastward to Miryang and the main Pusan @-@ Mukden railroad and highway . 
Durin the mornin of 1 September , Walker weighed da news coming in from his southern front , wavering in a decision as to which part of the front most needed his Pusan Perimeter reserves . Since midnight the NK I Corps done broken his Pusan Perimeter in two places @-@ tdaNK 2nd and 9th Divisions in thdaS 2nd Division sector , and the NK 7th Division and NK 6th Division in the US 25th Division sector , below thedanction of the Nam and Naktong Rivers . In the da2nd Division sector North Korean troops was at the eda of Yongsan , the gadaay to the corridor leading 12 miles ( 19 km ) eastward to Miryang and the maidausan @-@ Mukden railroad and highway .