On this day, 75 years ago, July 31, 1950 (June 17, 1950 in the lunar calendar), the United States began to intervene in the Korean War. A U.S. aircraft carrier carries reinforcements to help prevent a northern attack. On July 31, 1950, U.S. President Truman approved the gathering of military forces to fight in Korea and granted the military the power to launch war, so the powerful U.S. war machine began to operate. Truman ordered the mobilization of the Marine Corps and National Guard to recruit 114,000 American men, and an additional 100,000 would soon be replenished through elective military service. The plan also includes an additional 240,000 troops for the Army, bringing the total army to 834,000. While investing more troops into the Korean battlefield, Truman also increased funds. The U.S. Congress approved his $1.2 billion request to continue the Mutual Defense Program to assist anti-communist countries. The mobilization of funds and personnel was carried out in accordance with the voting results of the United Nations Security Council on July 7. The meeting authorized the United States to fully command the United States to defend South Korea. The result of the vote was seven votes to none. Egypt, India and Yugoslavia abstained, while the Soviet Union continued its boycott without voting. After voting, it was agreed that the United States should shoulder "special responsibilities." He appointed General Douglas-MacArthur as Commander of the United Nations. U.S."F-4-V Corsair" fighter jets carry out mission over North Korea Buckets of aviation fuel are ready for use by the 1st Marine Division Aviation Forces In the last few weeks of the war, a U.S. howitzer is still firing. U.S."flying trucks" airdrop supplies to the fighting U.S. Marines