- First Battle of Naktong Bulge
First Battle of Naktong Bulge Part of the Battle of Pusan Perimeter
US Marines resting on a newly captured position overlooking the Naktong River, August 19, 1950.
Date August 5–19, 1950 Location Yeongsan, Changnyeong, South Korea Result United Nations victory Belligerents United States North Korea Commanders and leaders John H. Church Lee Kwon Mu Strength 20,000+ 7,000 Casualties and losses ~600 killed
~1,200 wounded or captured
~2,300 wounded, captured, and deserted
- Korea Strait
- Han River
- Air campaign
- Suwon Airfield
- The Notch
- Pusan Perimeter
- 2nd Seoul
- Hill 282
- Operation Wonsan
- Ch'ongch'on River
- Chosin Reservoir
- Task Force Faith
- 3rd Seoul
- 1st and 2nd Wonju
- Twin Tunnels
- 3rd Wonju
- 4th Seoul
- Rugged and Dauntless
- 5th Seoul (Imjin River
- Soyang River
- Bloody Ridge
- Han River
- Heartbreak Ridge
- Maryang San
- Hill Eerie
- Sui-ho Dam
- Old Baldy
- Hudson Harbor
- White Horse
- Triangle Hill
- Jackson Heights
- The Hook
- Pork Chop Hill
- Outpost Harry
- Samichon River
The First Battle of Naktong Bulge was an engagement between United States and North Korean forces early in the Korean War from August 5–19, 1950 in the vicinity of Yongsan (Yeongsan, Changnyeong county) and the Naktong River in South Korea. It was a part of the Battle of Pusan Perimeter, and was one of several large engagements fought simultaneously. The battle ended in a victory for the United States after large numbers of US reinforcements destroyed an attacking North Korean division.
On August 5, 4th Infantry Division, North Korean People's Army (KPA), crossed the Naktong River in the vicinity of Yongsan, attempting to cut US supply lines to the north as well as gaining a bridgehead into the Pusan Perimeter. Opposing it was the 24th Infantry Division of the Eighth United States Army. Over the next two weeks, American and North Korean forces fought a bloody series of engagements inflicting heavy casualties on one another in a confusing series of attacks and counterattacks, but neither side was able to gain the upper hand. In the end, the US forces, aided by reinforcements, air support and heavy weapons, destroyed the invading North Korean force which was hampered by lack of supply and high desertion rates.
The battle was a turning point in the war for North Korean forces, which had seen previous victories owing to superior numbers and equipment. The American forces now had a numerical superiority and more equipment, including tanks and weapons capable of defeating the powerful North Korean T-34 tanks.
Outbreak of war
Following the 25 June 1950 outbreak of the Korean War after the invasion of the Republic of Korea (South Korea) by its northern neighbor, the Democratic People's Republic of Korea (North Korea), the United Nations decided to commit troops to the conflict on behalf of South Korea. The United States, a member of the UN, subsequently committed ground forces to the Korean peninsula with the goal of fighting back the North Korean invasion and to prevent South Korea from collapsing. However, US forces in the Far East had been steadily decreasing since the end of World War II, five years earlier, and at the time the closest forces were the 24th Infantry Division, headquartered in Japan. The division was understrength, and most of its equipment was antiquated due to reductions in military spending. Regardless, the 24th was ordered to South Korea.
The 24th Infantry Division was the first US unit sent into Korea with the mission to take the initial "shock" of North Korean advances, delaying much larger North Korean units to buy time to allow reinforcements to arrive. The division was consequently alone for several weeks as it attempted to delay the North Koreans, making time for the 1st Cavalry and the 7th and 25th Infantry Divisions, along with other Eighth Army supporting units, to move into position. Advance elements of the 24th Infantry were badly defeated in the Battle of Osan on July 5, the first encounter between American and North Korean forces. For the first month after the defeat of Task Force Smith, 24th Infantry was repeatedly defeated and forced south by superior North Korean numbers and equipment. The regiments of the 24th Infantry were systematically pushed south in engagements around Chochiwon, Chonan, and Pyongtaek. The 24th made a final stand in the Battle of Taejon, where it was almost completely destroyed but delaying North Korean forces until July 20. By that time, the Eighth Army's force of combat troops were roughly equal to North Korean forces attacking the region, with new UN units arriving every day.
North Korean advance
With Taejon captured, North Korean forces began surrounding the Pusan Perimeter from all sides in an attempt to envelop it. The 4th and 6th North Korean Infantry Divisions advanced south in a wide flanking maneuver. The two divisions attempted to envelop the UN's left flank, but became extremely spread out in the process. They advanced on UN positions with armor and superior numbers, repeatedly pushing back U.S. and South Korean forces.
American forces were pushed back repeatedly before finally halting the North Korean advance in a series of engagements in the southern section of the country. Forces of the 3rd Battalion, 29th Infantry Regiment, newly arrived in the country, were wiped out at Hadong in a coordinated ambush by North Korean forces on July 27, opening a pass to the Pusan area. Soon after, North Korean forces took Chinju to the west, pushing back the US 19th Infantry Regiment and leaving routes to the Pusan open for more North Korean attacks. US formations were subsequently able to defeat and push back the North Koreans on the flank in the Battle of the Notch on August 2. Suffering mounting losses, the KPA force in the west withdrew for several days to re-equip and receive reinforcements. This granted both sides a reprieve to prepare for the attack on the Pusan Perimeter.
About 7 miles (11 km) north of the point where it turns east and is joined by the Nam River, the Naktong River curves westward opposite Yongsan in a wide semicircular loop. For most of this span, the Naktong is around 400 metres (1,300 ft) wide and 6 feet (1.8 m) deep, allowing infantry to wade across with some difficulty but preventing vehicles from crossing without assistance. This perimeter was defended by a network of observation posts on the high ground, manned by 24th Infantry. Forces in reserve would counterattack any attempted crossings by KPA. Artillery and mortar fire units were also deployed so large amounts of fire could be delivered on any one spot. The division was extremely dispersed. Already understrength, it presented a very thin line.
The 24th US Infantry Division, under the command of Major General John H. Church, occupied a region some 16 miles (26 km) long along the Naktong River. The 34th US Infantry Regiment occupied the southern half, west of Yongsan while the 21st US Infantry Regiment occupied the northern half, west of Changyong. The 19th US Infantry Regiment, meanwhile, was re-equipping in the rear of the lines. In all, the 24th and its supporting units had a strength of 14,540 on August 5.
Opposing the 24th Infantry was the 4th North Korean Infantry Division, under the command of Major General Lee Kwon Mu. Both Mu and his division were highly decorated for their exploits so far in the war, particularly during the First Battle of Seoul. By August 4 the 4th Division had concentrated all of its regiments in the vicinity of Hyopch'on. It stood at a strength of about 7,000 with 1,500 in each infantry regiment.
North Korean attack
At midnight on the night of August 5–6, 800 North Korean soldiers of the 3rd Battalion, 16th Regiment waded across the river at the Ohang ferry site, 3.5 miles (5.6 km) south of Pugong-ni and west of Yongsan, carrying light weapons and supplies over their heads or on rafts. A second force attempted to cross further north but was hit with machine gun and artillery fire, falling back in confusion. At 0200 on August 6, the North Koreans began engaging the forces of 3rd Battalion, 34th Infantry and moved forward after a small fight, attempting to penetrate the lines to Yongsan. North Korean infantry forced 3rd Battalion back, and the American battalion abandoned its command post to consolidate its position. The attack caught the Americans by surprise as US commanders expected the North Koreans to attempt a crossing further north. The landing threatened to split the American lines and disrupt supply lines to positions further north. Subsequently the North Koreans were able to capture a large amount of American equipment.
The 34th Infantry's regimental headquarters ordered the 1st Battalion to counterattack the North Koreans. When 1st Battalion arrived at 3rd Battalion's former command post, it was ambushed by KPA troops on the high ground. C Company, the first to arrive, suffered over fifty percent casualties. A and B Companies counterattacked with tanks and armor, eventually rescuing the beleaguered C Company. At around 20:00, A Company made contact with L Company, 3rd Battalion, still in its positions on the river, radioing that the North Koreans had penetrated eastward north of the Yongsan-Naktong River road to Cloverleaf Hill, but had not yet crossed south of the road to Obong-ni Ridge. The North Koreans had penetrated 3 miles (4.8 km) east of the Naktong and halfway to Yongsan.
Several units of the 34th Regiment began to retreat north and into the 21st Infantry's lines, but Church ordered them turned around. He also ordered the 19th Infantry to counterattack west along the northern flank of the 34th Infantry to help oppose the KPA. Although the 24th Infantry was repulsed closer to the river, 1 mile (1.6 km) inland the 19th Infantry trapped about 300 North Koreans in a village and killed most of them.
The 1st Battalion, 34th Infantry, had managed to block the North Korean's advance to Yongsan while the 19th Infantry was able to push it back and inflict substantial casualties. However, by the evening of August 6, KPA held firmly on to their bridgehead. Attempted crossings that night were repulsed to the south by South Korean forces, but an unknown number of reinforcements were moved across the river the night of August 6–7. On August 7–8, the North Koreans tried to move two more battalions across the river to the north, but were repulsed by 21st Infantry, which was still in place. The KPA battalions were shifted south to cross at the bridgehead, instead. By August 8, an estimated regiment of North Korean troops were across the Naktong.
American counterattacks continued into the morning of August 7, but the gains were slow, hampered by the hot weather and a lack of food and water. The North Koreans were able to press forward and regain the Cloverleaf Hill and Oblong-ni Ridge, critical terrain astride the main road in the bulge area. By 16:00 that day, the 9th Infantry Regiment, 2nd US Infantry Division, a unit newly-arrived in Korea, was sent to the region. Church immediately ordered it to attack the North Korean salient at the bulge. 9th Infantry was fresh and well-equipped. They were also inexperienced, many of their number being reservists. Despite a tenacious attack, the 9th Infantry was only able to regain part of Cloverleaf Hill before intense fighting stalled its movement.
North Korean forces began making gains in the hills along the river adjacent to their bridgehead, against positions of the 34th Infantry. Coordinated attacks pushed A Company to the north back from their hills with heavy casualties on August 7. K Company to the south was also attacked but held its line, reinforced by L Company on August 10. Fighting continued for several days, resulting in heavy casualties as both sides captured and recaptured the hills along the Naktong, neither side able to gain a decisive advantage against the other.
Task Force Hill
In an attempt to destroy the North Korean bridgehead, Church assembled a large force under the 9th Infantry Regiment. Dubbed "Task Force Hill", this force comprised the 9th, 19th, and 34th Infantry Regiments as well as 1st Battalion, 21st Infantry, plus supporting artillery and other attached units. It was assigned to drive the North Koreans from the east bank of the river on August 11. Commanding the task force was Colonel John G. Hill, the Commanding Officer of the 9th Infantry Regiment.
The 4th North Korean Division, meanwhile, had constructed underwater bridges of sandbags, logs, and rocks, finishing the first on August 10. 4th Division used it to move trucks and heavy artillery as well as additional infantry and a few tanks across the river. By the morning of August 10, an estimated two KPA regiments were across the river and occupying fortified positions. Supplies continued to stream in through rafts. Task Force Hill mounted its attack, but was once again unable to make progress due to the newly established artillery. Its directive to attack quickly became one to dig in and hold its ground, and by nightfall the entire 4th North Korean Division was across the river. On August 10, elements of 4th North Korean began to move south, outflanking Task Force Hill. The next day, scattered North Korean elements attacked Yongsan. KPA repeatedly attacked at night, when American soldiers were resting and had greater difficulty resisting.
On August 12, General Walton Walker, in command of the Eighth Army, dispatched part of the 27th Infantry Regiment, 25th US Infantry Division, to attack north from the 25th Division's zone to drive off 4th North Korean Division troops moving into Yongsan. Simultaneously, Church assembled all the combat service support soldiers he could and formed them into a combat unit to block further penetration of North Korean forces, which were setting up roadblocks on the roads from Yongsan.
Additional reinforcements poured in. The rest of the 27th Infantry moved in, as well as a battalion from the 23rd Infantry Regiment, 2nd US Infantry Division. These were able to push North Korean infiltrators out of Yongsan and back to their firmly held positions at Cloverleaf Hill. On August 14, following an artillery barrage, Task Force Hill launched a direct assault on these positions. Fighting continued the entire day in a fierce series of attacks and counterattacks in which both sides, already at far reduced strength, inflicted large numbers of casualties. However, Task Force Hill's second attack was just as unsuccessful as its first. Casualties among officers was high in the fight, and the disorganization that followed meant most of the units in the fight could not communicate to coordinate any large actions. It became a battle of attrition by August 15 as neither 4th North Korean Division nor Task Force Hill were able to get the upper hand in the fight, which in several cases erupted in desperate hand-to-hand combat. Casualties mounted and a frustrated Walker ordered the 5,000-man 1st Provisional Marine Brigade to the area to turn the tide. The brigade moved from the Masan region in the middle of a counteroffensive being conducted by the 25th US Infantry.
The 4th North Korean Division in the meantime was suffering serious logistical setbacks from lack of food, equipment, ammunition and, weapons. Conscripts from local South Korean villages were brought in to replace mounting losses. There was also virtually no provision for the wounded in the division, and the North Korean forces began to come apart under these stresses. Still, the division's morale remained relatively high and General Lee refused to withdraw.
Destruction of the bridgehead
The 1st Marine Provisional Brigade, in conjunction with Task Force Hill, mounted a massive offensive on Cloverleaf Hill and Obong-ni on August 17. The offensive began at 0800 on August 17, with US forces unleashing all heavy weapons available to them against the North Korean positions; artillery, mortars, M26 Pershing tanks, and airstrikes.
At first, tenacious KPA defense halted the Marines who responded with artillery, raking Cloverleaf Hill. Heavy indirect fire forced the North Koreans out of their positions before the Marines and Task Force Hill eventually overwhelmed them, one hill at a time. The Marines approached Obong-ni first, destroying resistance on the slope with an airstrike and a barrage from US tanks, but strong resistance caused heavy casualties, and they had to withdraw. The 18th North Korean Regiment, in control of the hill, mounted a disastrous counterattack in hopes of pushing the Marines back. The division's tactics of cutting off supplies and relying on surprise, which had provided them so much success up to this point, failed in the face of massive US numerical superiority.
By nightfall on August 18, 4th North Korean Division had been annihilated; huge numbers of deserters had weakened its numbers during the fight, but by that time, Obong-ni and Cloverleaf Hill had been retaken by the US forces. Scattered groups of North Korean soldiers fled back across the Naktong, pursued by American planes and artillery fire. The next day, the remains of 4th Division had withdrawn across the river. In their hasty retreat, they left a large number of artillery pieces and equipment behind which the Americans later pressed into service.
The battle caused massive casualties for both sides. By the end of the fight, 4th North Korean Division had been completely destroyed, with only 300 or 400 men in each of its regiments. Of its original 7,000 men, the regiment now had a strength of only 3,500, having suffered over 1,200 killed. Several thousand of the members of the division deserted during the fight. Most of these men were South Korean civilians forcibly conscripted into the North Korean army. 4th Division would not recover until much later in the war. The battle represented a new phase in the war for the North Koreans. Their numerical superiority was gone, and their strategy of attacking supply lines and rear formations of US units was no longer effective without overwhelming numbers. Additionally, the advantage the T-34 tank had once provided was also gone; American units were now well equipped with effective anti-tank weapons, as well as larger numbers of tanks of their own. Subsequently, all 4th Division's T-34s were quickly knocked out before they could inflict much damage.
The 9th Infantry and supporting units sustained 57 killed, 106 wounded, two captured, and 13 missing, a total of 180 casualties. The 21st Infantry suffered around 30 killed and 70 wounded, the 19th Infantry around 450 casualties, and the 34th Infantry around 400. The 27th Infantry reported around 150. The 1st Provisional Brigade reported 66 Marines dead, 278 wounded, and one missing. In total, American forces suffered around 1,800 casualties during the conflict, including about a third them killed.
In memory of the battle at Naktong Bulge, as well as other conflicts along the Pusan Perimeter and the Battle of Taegu, the South Korean government set up the Nakdong River Battle Museum along the river in the vicinity of the conflict in 1979, which includes a number of artifacts from the Korean War as well as a memorial to those killed during the war.
- Hill 303 massacre
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- ^ "Nakdong River Battle Museum". City of Daegu. http://www.daegu.go.kr/Apsanpark/. Retrieved 2010-07-10.
- Alexander, Bevin (2003), Korea: The First War We Lost, Hippocrene Books, ISBN 978-0781810197
- Appleman, Roy E. (1998), South to the Naktong, North to the Yalu: United States Army in the Korean War, Department of the Army, ISBN 978-0160019180, http://www.history.army.mil/books/korea/20-2-1/toc.htm
- Catchpole, Brian (2001), The Korean War, Robinson Publishing, ISBN 978-1841194134
- Ecker, Richard E. (2004), Battles of the Korean War: A Chronology, with Unit-by-Unit United States Causality Figures & Medal of Honor Citations, McFarland & Company, ISBN 978-0786419807
- Fehrenbach, T.R. (2001), This Kind of War: The Classic Korean War History – Fiftieth Anniversary Edition, Potomac Books Inc., ISBN 978-1574883343
- Gugeler, Russell A. (2005), Combat Actions in Korea, University Press of the Pacific, ISBN 978-1410224514
- Varhola, Michael J. (2000), Fire and Ice: The Korean War, 1950–1953, Da Capo Press, ISBN 978-1882810444
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