1st Provisional Marine Brigade
The 4th Division of North Korea was making bridges that were underwater made of sandbags, trees and rocks. It was strong enough to handle tanks and heavy things like Artillery. By August 10th, two entire regiments went over the river and took positions. The attack showed that the North Koreans can attack Yongsan which forced the United States to send reinforcements. There were a lot of deaths there and then General Walker sent the 1st Provisional Marine Brigade to the Naktong, They prepared to attack Cloverleaf Hill and Obong-ni, at 8:00 AM, August 17th, the 1st PMB sent all their men to attack, they used M26 tanks, airstrikes and mortars to help them.