The Northern Military Administration Office (Korean: 북로군정서) was an armed independence movement group founded in Donggandao in 1919.

In 1920, when Japan deployed its troops into Manchuria, it achieved a great victory over the Japanese army in the Battle of Cheongsanri.

In October 1919, under the leadership of Daejonggyo and Shinminhoe, Daehan Jeonguidan and Daehangunjeonghoe were merged and reorganized into Daehangunjeongbu under the direction of the Provisional Government of Shanghai in December of that year.

The Provisional Government in Shanghai agreed on the condition that the name be changed to the Northern Military Administration Office.

At the time of its founding, the main figures were Seo Il and Hyeon Cheon-muk, who invited Kim Jwa-jin as commander-in-chief and took charge of the organization and training of the independence army.

[1] The origins of Northern Military Administration Office can be found in Junggwangdan, organized by Daejonggyo believers including Seo Il in March 1911.

Believers of Daejonggyo, which was founded as a national religion worshiping Dangun, sought to relocate the headquarters to Manchuria after the Japanese colonial rule in 1910 and established a branch in Bukgando.

[2] The Central Light Corps (Junggwangdan (重光團)) was an armed group established by the Daejonggyo in North Gando in March 1911.

It was established in Wangcheong County in March 1911 by members of the Daejong Church who fled to North Gando.

[3][4] Although they aimed for armed struggle, they did not have the resources to acquire weapons, so they focused on strengthening the capabilities of the Korean community.

[3][4] Kim Gyo-heon, who became the second Taosagyo of Daejonggyo in 1916, went into exile in North Gando the following year and prepared for an armed struggle in earnest and launched a diplomatic independence movement.

He attempted to connect with the independence movement forces in Manchuria and the Maritime Province by dispatching them to Korea.

[3] Baeksun and Lee Beom- yoon toured the border regions of Russia and China to recruit volunteer soldiers.

The Korean Justice Corps aimed to carry out a secret armed struggle to achieve independence, and its leader was Seo Il.

However, the fact that the Shinminhoe-affiliated nationalists took charge of the military government caused opposition from members of the Confucian Church.

The headquarters of the Northern Military Administration Office was built at a strategic location deep in the forest, and was a base equipped with barracks and a parade ground, and was a training site that completely blocked access to outsiders.

Seo Il, the head of the Northern Military Administration Office, personally went on a business trip to Russian territory and promoted the purchase of weapons.

In August 1920, it exceeded 1,600, and it became the strongest elite unit in Northeast Manchuria armed with 1,300 rifles, 150 pistols, and 7 machine guns.

Officer training was provided as an accelerated training course for 6 months in accordance with the urgent needs of the time, and its contents included mental education, history, military science, martial arts (weapons and unit command and operation), gymnastics, and rules and regulations.

In September 1920, the Northern Military Administration Office also left the base of the Western faction and moved its troops to the north at the urging of Maeng Bu-deok, commander of the Chinese army's Yanji unit.

[5][8][7] However, due to the Free City Incident in June 1921, the Independence Corps was disarmed, suffered a heavy blow, and many were killed and deserted the unit.

Senior executives of the North Military Office Administration, including Seo Il and Kim Jwa-jin, noticed strange signs of the Soviet Communist Party in advance and escaped, returned to North Manchuria, and reorganized the unified independence army unit again in August 1922, but a large-scale independence corps like the one organized before was not reorganized.