워커 중장의 낙동강 방어선 구상은 대전 북방의 금강-소백산맥 방어선이 돌파된 직후인 7월 17일 무렵이었다.
Lieutenant General Walker's plan of the Nakdonggang Defensive Line was around July 17, shortly after the breakthrough of Geumgang-Sobaek Mountain Range Defense Line in northern Daejeon.