 When the North Koreans approached the Pusan Perimeter on August 5 , they attempted the same frontal assault technique on the four main avenues of approach into the perimeter . Throughout August , the NK 6th Division , and later the NK 7th Division engaged the US 25th Infantry Division at the Battle of Masan , initially repelling a UN counteroffensive before countering with battles at Komam @-@ ni and Battle Mountain . These attacks stalled as UN forces , well equipped and with plenty of reserves , repeatedly repelled North Korean attacks . North of Masan , the NK 4th Division and the US 24th Infantry Division sparred in the Naktong Bulge area . In the First Battle of Naktong Bulge , the North Korean division was unable to hold its bridgehead across the river as large numbers of US reserve forces were brought in to repel it , and on August 19 , the NK 4th Division was forced back across the river with 50 percent casualties . In the Taegu region , five North Korean divisions were repulsed by three UN divisions in several attempts to attack the city during the Battle of Taegu . Particularly heavy fighting took place at the Battle of the Bowling Alley where the NK 13th Division was almost completely destroyed in the attack . On the east coast , three more North Korean divisions were repulsed by the South Koreans at P 'ohang @-@ dong during the Battle of P 'ohang @-@ dong . All along the front , the North Korean troops were reeling from these defeats , the first time in the war their strategies were not working . 
 When the North Koreans approached the Pusan Perimeter on August 5 , they attempted the same frontal assault technique on the four main avenues of approach into the perimeter . Throughout August , the NK 6th Division , and later the NK 7th Division engaged the US 25th Infantry Division at the Battle of Masan , initially repelling a UN counteroffensive before countering with battles at Komam @-@ ni and Battle Mountain . These attacks stalled as UN forces , well equipped and with plenty of reserves , repeatedly repelled North Korean attacks . North of Masan , the NK 4th Division and the US 24th Infantry Division sparred in the Naktong Bulge area . In the First Battle of Naktong Bulge , the North Korean division was unable to hold its bridgehead across the river as large numbers of US reserve forces <a href='uninflect' title='1'><mark>were</mark></a> brought in to repel it , and on August 19 , the NK 4th Division was forced back across the river with 50 percent casualties . In the Taegu region , five North Korean divisions <a href='uninflect' title='2'><mark>were</mark></a> repulsed by three UN divisions in several attempts to attack the city during the Battle of Taegu . Particularly heavy fighting took place at the Battle of the Bowling Alley where the NK 13th Division was almost completely destroyed in the attack . On the east coast , three more North Korean divisions <a href='uninflect' title='3'><mark>were</mark></a> repulsed by the South Koreans at P 'ohang @-@ dong during the Battle of P 'ohang @-@ dong . All along the front , the North Korean troops <a href='uninflect' title='4'><mark>were</mark></a> reeling from these defeats , the first time in the war their strategies <a href='uninflect' title='5'><mark>were</mark></a> not working . 
When the North Koreans approached da Pusan Perimeter on August 5 , they attempted the same frontal assault technique on the four main avenues of approach into tdaperimeter . Throughout August , the NK 6th Division , and later the NK 7th Division engaged thdaS 25th Infantry Division at the Battle of Masan , initially repelling a UN counteroffensive b4 countering with battles at Komam @-@ ni and Battle Mountain . dese attacks stalled as UN forces , well equipped and with plenty of reserves , repeatedly repelled North Korean attacks . North of Masan , the NK 4th Division and the US 24th Infantry Division sparred in the Naktong Bulge area . In the First Battle of Naktong Bulge , thedarth Korean division was unable to hold its bridgehead across the river as bigass numbers of US reserve forces was brought in to repel it , and on August 19 , the NK 4th Division was forced back across the river wid 50 percent casualties . In the Taegu region , five North Korean divisions was repulsed by three UN divisions in several attempts to attack the day during the Battle of Taegu . Particularly heavy fightin took place at the Battle of the bdain Alley where the NKdath Division was almost completely destroyed in the attack . On the east coast , three more North Korean divisions was repulsed by the South Koreans at P 'ohang @-@ dong during the Batda of P 'ohang @-@ dong . All along the fronda the North Korean troops was reeling from tdesedefeats , the first time in the war their strategies was not workin .