<P> The first battle the Americans entered in the Korean War was the Battle of Osan , where about four hundred strong landed in Pusan airport on the first of July . The American troops were sent off to Taejon the next morning where Major General John H. Church the head of U.S. field headquarters was confident in the US troop 's strengths to push back the North Koreans . On July fifth the troops were finally put to the test when North Korean tanks crept towards Osan . The four hundred infantryman of the U.S. also called Task Force Smith opened fire on the North Koreans at 8 : 16 am . Only four of the North Korean tanks were destroyed and twenty - nine kept moving forward breaking the US line . At the end of the battle only two more North Korean Tanks and two regiments of North Korean infantry were destroyed . The US had lost the battle , revealing that the mere sight of US troops would not reverse the military balance in Korea . By early August , the North Korean troops had pushed back the US and South Korean troops all the way to Naktong River , which is located about thirty miles from Pusan . The two weeks of fighting following this resulted in the most casualties of US troops than any other equivalent period of this war . However , during this time the US pushed supplies and personnel to Korea and by the end of July South Koreans and US troops outnumbered the North Koreans , although the North had pushed back the US and South by an amazing amount the North had suffered over fifty thousand casualties . Also because North Koreas supply lines were so lengthy and with the US in control of the water and air replenishing there losses were slow . </P>
<P> The first battle the Americans entered in the Korean War was the Battle of Osan , where about four hundred strong landed in Pusan airport on the first of July . The American troops were sent off to Taejon the next morning where Major General John H. Church the head of U.S. field headquarters was confident in the US troop 's strengths to push back the North Koreans . On July fifth the troops were finally put to the test when North Korean tanks crept towards Osan . The four hundred infantryman of the U.S. also called Task Force Smith opened fire on the North Koreans at 8 : 16 am . Only four of the North Korean tanks were destroyed and twenty - nine kept moving forward breaking the US line . At the end of the battle only two more North Korean Tanks and two regiments of North Korean infantry were destroyed . The US had lost the battle , revealing that the mere sight of US troops would not reverse the military balance in Korea . By early August , the North Korean troops had pushed back the US and South Korean troops all the way to Naktong River , which is located about thirty miles from Pusan . The two weeks of fighting following this resulted in the most casualties of US troops than any other equivalent period of this war . However , during this time the US pushed supplies and personnel to Korea and by the end of July South Koreans and US troops outnumbered the North Koreans , although the North had pushed back the US and South by an amazing amount the North had suffered over fifty thousand casualties . Also because North Koreas supply lines were so lengthy and with the US in control of the water and air replenishing there losses were slow . </P>
when did the us go to war with korea
when did the us go to war with korea
the Battle of Osan
the Battle of Osan