(CNN) -- Here's a look at what you need to know about the Korean War. July 27, 2013 marks 60 years since the signing of the armistice agreement that ended the fighting.
Causes of the Korean War The 38th parallel division of Korea happened in August 1945, at the end of World War II. The 2 newly formed countries became ideologically opposite.
November 1947 - The United Nations General Assembly approves elections to be held throughout Korea to choose a provisional government for the entire county. The Soviet Union opposed this.
On May 10, 1948 the people of South Korea elected a national assembly. The assembly set up the government of the Republic of Korea. The people of north refused to take part. On September 9 North Korean Communists established the Democratic People's Republic of Korea. Both sides claimed the entire country and their troops fought near the border several times from 1948 to 1950.
The United States removed its last troops from Korea in 1949 and in early 1950 North Korea decided upon war to achieve its goal of Korean unification under Communist rule.
Facts: June 25, 1950 - The invasion of the Republic of Korea (ROK) by the North Korean People's Army (NKPA) begins what would be the Korean War.
July 27, 1953 - Democratic People's Republic of Korea, Chinese People's Volunteers and the UN sign an armistice agreement, ending the fighting.
There has never been a peace treaty, so the Korean War has technically never ended.
The casualty toll had been reported as 54,246 until June 2000, when the Pentagon acknowledged that a clerical error had included deaths outside the Korean War theatre in the total.
The first war in which the U.N. played a role. When asked to send military aid to South Korea sixteen countries sent troops and 41 sent equipment or aid. China fought on the side of North Korea and the Soviet Union sent them military equipment.
The U.S. sent about 90% of the troops that were sent to aid South Korea.
The first war with battles between jet aircraft.
The U.S. spent around $67 billion on the war
The truce talks lasted 2 years and 17 days.
There are more than 7,900 American soldiers still missing in action from the Korean War as of June 2013.
U.S. Troops Statistics Source: Dept. of Defense U.S. Deaths: Hostile: 33,739 Non-Hostile: 2,835 Total In-Theatre: 36,574 U.S. Wounded in Action - 103,284
Other Casualties by Country (killed and missing) Source: Encyclopedia Britannica South Korea - (217,000 military, 1,000,000 civilian) North Korea - (406,000 military, 600,000 civilian) China - (600,000 military)
Timeline June 25, 1950 - 135,000 soldiers from the communist North Korean People's Army (NKPA) crossed the 38th parallel and invaded Republic of Korea (ROK).
June 25, 1950 - The U.N. Security Council denounced North Korea's actions and called for a cessation of hostilities and withdrawal of the NKPA to the 38th parallel.
June 26, 1950 - U.S. President Harry S. Truman directed General Douglas MacArthur to evacuate American dependents from Korea and to assist the ROKA.
June 30, 1950 - Truman ordered ground troops into action.
July 1950 - In the first month of the war, U.S. soldiers killed significant numbers of Korean civilians under a bridge, near a village called No Gun Ri. It is unclear whether the soldiers were ordered to kill civilians or acted on their own.
July 5, 1950 - For the first time since the end of World War II U.S. troops go into battle, at Osan, 30 miles south of Seoul. The first American casualty of the Korean War dies here, Private Kenneth Shadrick of West Virginia.
June 23, 1951 - Jacob Malik, a Soviet delegate to the U.N., proposes a cease-fire
July 10, 1951 - Truce talks begin at Kaesong
October 25, 1951 - Truce talks are moved to Panmunjom.
November 27, 1951 - Both sides agree that the existing battle lines would be the final dividing line between North and South Korea if a truce is reached in 30 days.
April 1952 - Truce talks are deadlocked over voluntary repatriation.
October 8, 1952 - Truce talks are adjourned.
April 26, 1953 - Truce talks are resumed and the Communists agree to voluntary repatriation.
July 27, 1953 - Democratic People's Republic of Korea (north), Chinese People's Volunteers and the UN sign an armistice agreement. The Republic of Korea refused to sign. However hostilities ceased within 12 hours.
July 27, 1953 - Terms of the armistice include creation of the demilitarized zone, DMZ. Each side is 2,200 yards form a center point. The DMZ is patrolled by both sides at all times.
1990-1994 - North Korea recovers remains claimed to be 208 American servicemen.
2007 - Four sets of American servicemen remains are delivered to U.N. honor guards in Panmunjon
2011 - The remains of 26 U.S. Korean War servicemembers that had been listed as MIA are identified.
2012 - The remains of 40 U.S. Korean War servicemembers are identified.
January-May 2013 - Fifteen U.S. MIA Korean War servicemembers are identified.