On February 1, 1919, the Korean Declaration of Independence was proclaimed in Gando Province, China, the 2.8 Declaration of Independence in Tokyo, Japan on February 8, and the Gimi Declaration of Independence in Seoul on March 1. at the time, the Declaration of Independence spread like wildfire and was proclaimed across the country and in various regions wherever the Korean people live. The spirit of independence was consolidated, and provisional governments were established in China, Russia and Seoul. Later, the provisional governments of the three regions were integrated, and on April 11th, 1919, the Provisional Government of the Republic of Korea was established in Shanghai.

In 1919 when the desire for independence was high, there was an independent army called in Bongodong which had been received military training for long time and was fully armed with new weapons by General Choi Woonsan. He re-established by attaching 'Daehan', meaning the military of the Republic of Korea in line with the establishment of the Provisional Government of the Republic of Korea in Shanghai. was the first military unit in Korea that was fully armed of over 600 elite soldiers who had been trained and nurtured since around 1910. All the brothers of General Choi Woon-san became the main pillars of ; Choi Jin-dong, the older brother, took over as the commander-in-chief who resigned from the Chinese army, The second, Choi Woonsan himself was the chief of staff, and the third, the younger brother, Choi Chi-heung took on the operational staff at the command

In 1920, the Provisional Government declared the "first year of the Independence War" urging patriotic youth to join the independence army and requesting the integration of independence army units in the Gan-do(Manchuria) and Yeon-hae regions.

Numerous patriotic young people from domestic and North Gando to devote their lives for the independence. However, it is a treasure only when the beads are threaded. Proper military training and weapons for the suddenly increased number of applicants. General Choi Woonsan provided his own land, Sipripyeong and supported military funds to establish and maintain military training institute and purchased new weapons from the Czech Legion too.

There are reports on the supply of weapons in Bongodong compiled by Japanese spies. A Japanese report said, “Buy 500 rifles. Purchase of 50,000 rounds of bullets, 430 pistols, 5,000 rounds of pistol bullets, and 2 machine guns (reported on March 19), “purchase of 700 rifles (reported on April 5)”, etc. In addition to these purchase records, there would have been many weapons purchases that they couldn't find out.

In preparation for the upcoming War of Independence, General Choi Woon-san also raised military funds necessary for the integration of the independence armies in North Gando by selling his own land.

The armed independence forces in North Gando engaged in intensive discussions on unification from March in 1920 and on May 11th, six representative independence forces announced 'Pledge of Associations in North Gando' consisting of 18 articles for the united action. Finally, the united independence army in North Gando, ‘Daehan Bukrodokgunbu’ was finally established on May 19, by the signing of a contract of permanent integration between ‘Daehan-Gunmudodokbu’ and ‘Dahan-Kukminhoe’ in Bongodong. And other independence troops, ‘Uigundan’, ‘Sinmindan’, ‘Gwangbokdan’ and ‘Maenghodan’ were also integrated into it under the guarantee that General Choi Woon-san would provide weapons and military funds.

As thousands of independence troops gathered in Bongodong to expand their power, the Japanese military, feeling a sense of crisis, came to implement the plan to subjugate the base of the independence army. They crossed the border and the Bongodong War of Independence began.

However, ‘Daehan Bukrodokgunbu’ led by General Choi Woon-san and his older brother Commander-in-Chief Choi Jin-dong had already completed all war preparations in anticipation of a Japanese attack. They defeated the Japanese army in the Bongodong War of Independence and won a great victory.

It is not possible by luck that our independence army wins the war against the Japanese army, which was recognized as the strongest army in Asia at the time.
General Choi Woon-san made thorough preparations for a long time to acquire weapons and recruit independence troops to build military power. He was able to achieve a great victory in Bongodong War of Independence because of his intelligence gathering on the Japanese military and his thoroughly prepared strategies and tactics.

The victory of the War of Independence in Bongodong and Cheongsan-ri was possible thanks to the sacrifice and dedication of numerous patriotic young people who were determined to fight for the independence of the Republic of Korea. And behind it there was the sacrifice and dedication of General Choi Woon-san and his brothers who devoted everything they had to making Bongodong Independence Army Base and nurturing the independence army for 10 years.