About north of the confluence of the Naktong and Nam Rivers, the Naktong curves westward opposite Yongsan in a wide semicircular loop. For most of this span, the Naktong river is around wide and deep, allowing infantry to wade across with some difficulty, but preventing vehicles from crossing without assistance. This perimeter was manned by a network of observation posts on the high ground where forces from the 24th Infantry Division monitored the river area. Forces in reserve would counterattack any attempted crossings by KPA forces. The division was spread extremely thinly; already understrength, it presented a very weak line.