He first consulted with members of the Korean National Association in places such as Wangcheong-hyeon's Yeo-ja-jeong and Seo-gyeong-myeon, and agreed to build a united front.
The integrated corps concentrated its forces in Bongo-dong, where the headquarters of the Military Provincial Administration was located, and carried out ceaseless operations to enter the country.
But the Japanese imperial intelligence records provide a relatively detailed picture of the capabilities of the Korean Northern Military Command.
[4][3] The Korean Northern Army Command, which was born in the form of a well-organized corps rather than a simple union, carried out active guerrilla warfare entering the country immediately after its launch.
[5] On June 4, 1920, an independence army guerrilla force consisting of 30 people crossed the Duman River and entered Korea, attacked and defeated a Japanese military police patrol stationed in Gangyang-dong, 5 ri north of Jongseong, and returned home.
The Japanese, who suffered great damage from the independence army's attack, immediately formed a pursuit force and chased after them .
And the place where the Japanese army's advance unit was located was in the very center of the area where the independence forces were ambushed on the mountains on three sides.
However, it was difficult to hit the independence fighters who were firing bullets while concealed between rocks with dense trees and high altitude.
The Japanese Army's Wolgang Pursuit Battalion was ultimately defeated, suffering numerous casualties in the Bongo-dong Valley and during the retreat .
However, the Battle of Bongo-dong became the starting point of the war of independence, showing the aggressor Japanese imperialists proof that the Korean people would definitely achieve national liberation.
When the fabricated Hunchun Incident occurred, Japan invaded Northwest Jiandao with approximately 20,000 troops under the pretext of catching the criminals who destroyed the Japanese consulate .
According to this strategy, the independence corps in North Gando decided to move their troops to the west of the densely forested Baekdu Mountain foothills from late August and early September , and put this into practice .
However, Choi Jin-dong's Military Provincial Administration broke away from the Korean Northern Army Command, and acted separately, choosing a course in the northeast direction rather than toward the foot of Baekdu Mountain.
The Korean Independence Army and the Northern Military Administration Office, who left the camp in North Gando, arrived at Ido-gu, Hwaryong-hyeon (和龍縣) in late September 1920.
It was difficult to reach a clear conclusion as the meeting was conducted while monitoring the sympathy of the Japanese military coming from all directions.
The Nationalist Army also participated in this combined unit, and Lim Byeong-geuk took on the position of mid-level executive, leading his subordinates and preparing for battle.
[5] On the morning of October 21, 1920, Japanese troops of the Yamada Regiment of the Azuma Region passed through Cheongsanri Village in Samdo-gu and entered the Baekunpyeong Valley, where the Northern Military Administration Office was occupying the hill, around 8:00 AM.
At that moment, under the order of Commander Kim Jwa-jin, the independence fighters of the Northern Military Administration Office who were hiding on the hill opened fire all at once.
[5] Meanwhile, after the Battle of Cheongsanri, the main force of the independence army moved to northern Manchuria , and commanders such as Lim Byeong-geuk led some of their troops to mountainous areas and disappeared, causing the Japanese invaders to commit atrocities against the immigrant Korean community.
According to a survey conducted by a Provisional Government dispatcher in October and November 1920 , the damage to the Korean community in Northwest Gando was as follows: 3,664 people were murdered.
[5] However, Lim Byeong-geuk did not join them at this time, but led his subordinate independence army to their first destination, Ando-hyeon (安圖縣), west of Baekdu Mountain.