In August 1951, the road neck from Hongcheon County Gangwon Province to Injae County, was crushed by gloomy atmosphere The 1st Regiment of the fully armed Korean Marine Corps and the 1st Division of the U.S. Marine Corps were silently walking. A heavy rain poured in, flooding the Soyang River, and flooded the roads and bridges. They had to walk turn far road a lot. But their eyes was full of the passion. During the last 15 days in Gangwon province also announced the victory after a fierce battle at Mount Dosol in Yanggu County. The intention was to hit the North Korean military stronghold of the Inner Geumgang River, which stretched out the trunk of the main peak of Mount Keumgang by this victory. It was guarded by the strongest units of the North Korean Army, and included the most tactical points, the 924-1026-1055 Battle Heights. The South Korean military called the 924th Heights to the Kim Il-sung Heights and the 1026 Heights to the Mao Zedong Heights, causing morale and hostility among the soldiers.

The 11th Battalion of the 3rd Battalion of the 1st Marine Regiment, with Second Lieutenant Kang Gil-young, was in charge of the right rear of the Kim Il-Sung Heights. At 10:30 A.M. on Sept. 1, a gun was fired at the Heights. Contrary to expectations, the North Korean Army's defense was solid. Tension flowed. The bullet flew overhead and the shell began to fall prematurely. At his feet, a mine exploded. However, the 11th Squadron did not back down and approached the 100 meters in front of the North Korean Army. At that moment, in front of Kang's eyes, Lieutenant Yook dong-wook collapsed with a gunshot wound to the neck. Second Lieutenant Kang held the Lieutenant Yook in his chest and said, "Captain, don't worry! That notice was at the forefront "We will surely occupy it," but that was the last word of the Second Lieutenant Kang. As he made his way to the front of the North Korean Army 30 meters, he was shot by North Korean bullets and died on the spot. He was 21 years old. The next morning, the South Korean Army raised the flag of victory.

Lieutenant Kang Gil-young, from Sangju city, Gyeongsangbuk-do Province, voluntarily enlisted in the Marine Corps in April 1949 at the age of 19 and received military training. He served as a rifleman in the Battle of Jindong-ri, Changwon-si, Gyeongnam province, the Tongyeong amphibious operation (the operation from which the word 'Ghost-catching marines' came from), the Incheon amphibious operation (an operation turned the tide of the Korean War), and the Seoul recapture operation. In particular, he was called up as a reconnaissance team during the Incheon Landing Operation in 1950 and successfully performed an important task of sneaking into the North Korean Army and detecting the situation of the battle. After being commissioned as a second lieutenant in March 1951, he made remarkable contributions by participating in the battles of Garisan, Hwacheon, and Dosolsan region battle.

In commemoration of his noble spirit of sacrifice, in 1953, the government conferred the Chungmu Service Medal and a one-class special promotion from second lieutenant to lieutenant in the marines.