In the vicinity of Mt. Matsukiyama, where Fortress Arushun was the scene of fierce battles during the Russo-Japanese War, the roofs of Russian positions and trenches, which were built to protect them from bullet hazards, and skeletons of skeletons were scattered around.

     Near Mt. Matsukiyama, where Fort Arushun was the scene of fierce battles during the Russo-Japanese War, the Russian army's positions and trenches were littered with canopies, which were roofs built to protect them from bullet hazards, and bleached skulls.

　The Russians occupied the fortress in 1898 after obtaining a lease from the Qing Dynasty in order to make it the largest base for their Pacific Fleet, and spent about eight years building the fortress using about 200,000 barrels of cement. Each redoubt was made of concrete and connected by underground passageways. About a hundred or so heavy guns, firearms, and powerful machine guns were deployed. The main front line of defense was divided into three fronts (northeast, west, and north), including Baigin Mountain, Dongjikang Mountain, Erlong Mountain, Songju Mountain, Chair Mountain, and the Sun Grove Highlands. There were forward positions on Mt. The Japanese Army and Imperial Japanese Army were unaware of the reinforcement of Fort Arthur by the Russians.

　The first Japanese general assault was made by artillery units beginning on August 19, 1904, and continuing until August 20, 1904, when a grand assault by infantry units was ordered on August 21. The Russian redoubts were still in place, and the Japanese troops invading the unshielded exposed area were exposed to firepower from every battery, and Japanese soldiers fell to the ground in a flurry and died in battle. On August 24, Commander-in-Chief Nogi ordered the attack to be called off. The second general offensive began on October 26, and by November 1 had stalled with the capture of Hachimaki Mountain, Ichinohe Redoubt, and Mt. Approximately 44,100 Japanese troops participated in the second general attack, of which about 3,830 were killed in action. The corpses of Japanese soldiers lay in a heap in front of the Russian positions. On November 30, the infantry began their assault. About 3,100 men of the White Wings, a decisive force, dared to make a nighttime frontal assault, killing about 2,300 men and destroying the unit.

　The 203rd Highland was captured from November 27 to December 5. 203rd Highland was temporarily occupied on November 31, but was soon recaptured by the Russians. At the command post, General Kodama had the command of the Third Army transferred from General Nogi. Immediately, the heavy artillery units were moved to Mount Takasaki, and from December 4, the heavy artillery units thoroughly bombarded the main batteries of the Russian army. The Russian batteries were destroyed on December 4, and on December 5, infantry units launched an assault and occupied the summit of the 203rd Highland, finally completely capturing the entire mountain on December 6. From the third general attack to the capture of the 203rd Highland, approximately 17,000 of the 64,000 Japanese soldiers who participated in the war were killed or wounded.

　Once the 203 heights were occupied, the Japanese bombarded warships and port facilities in Port Arthur on December 5; by December 6, the Arthurian fleet was completely destroyed; on December 18, the East Jikkan Mountain Redoubt fell; on December 28, the Erlong Mountain Redoubt; and on December 30, the Songju Mountain Redoubt; on January 1, 1905, the 185 heights were captured and the Japanese forces were just Just before the Japanese forces entered the city of Port Arthur, a Russian military envoy with a white flag appeared at the outpost and presented the surrender document.