The South Koreans were ill prepared had only a total force of about 95 000 soldiers, few planes or heavy guns and no tanks. The North had about 135 000 soldiers and also had planes, artillery and tanks. The South Korean army was hardly any resistance to the North. .

             President Truman appealed to the United Nations to take "police action" against the "unwarranted" attack. Hence, under the "name of the United Nations", the United States was able to send troops and forces. The United States sent about 480 000 troops and about 39 000 came from countries like Australia, Belgium, Canada, Columbia, Ethiopia, France, Great Britain, Greece, Luxembourg, the Netherlands, New Zealand, the Philippines, South Africa, Thailand, and Turkey. At their greatest strength there was a total of almost 1 110 000 troops6. The North Korean Army also grew with the help of the Chinese government which sent about 780 000 troops by the end of the war. There were many attempts from the UN security council demanding that the Communist North remove their troops but all times they continued to advance. .

             Only two days after the initial invasion it had reached the gates of Seoul, the capital city. The North had advanced at a great speed and there was almost no stopping them from taking all of Korean in a matter of weeks if enforcement's were not sent soon. There had been an ocean of people trying to escape Seoul on one of the four bridges that crossed the Han river. Thousands of people were trying to leave but many of them didn't make it. The South Korean Army tried to destroy the bridges so help so down the North from coming any more south but they blew them to prematurely before many of the South Korean troops could leave Seoul, this caused the acceleration disintegration of the South Korean army. On July 8, with the approval of the UN security council, President Truman named General Douglas MacArthur commander in chief of the United Nations command.