The preparations for national resistance to fight a decisive battle against the Japanese imperialists had been pushed forward on a nationwide scale by small units, groups and political operatives of the Korean People's Revolutionary Army (KPRA) dispatched by the President to different parts of the country in the first half of the 1940s.

The Japanese imperialists claimed that they had discovered more than 180 anti-Japanese organizations within Korea in 1942, and that the total membership of these organizations amounted to 500,000.

The Kim Il Sung Corps struggled with the objective of rallying the broad anti-Japanese masses, publicizing that the Pacific War would soon end in Japan's defeat, that Korea would become independent and that "Kim Il Sung would be the supreme leader of liberated Korea". And the Paektusan Association attempted to join the People's Revolutionary Army and worked to develop national consciousness, for the purpose of achieving Korea's independence.

Resistance organizations in different parts of the country rose up against the conscription system enforced by the Japanese imperialists, and sent to the then Japanese prime minister such warning notes as "Korea will become independent" and "Dedicated to our motherland Korea, we will resist our enemy, Japan, to the last, to the last moment of our lives, and even in our graves".

National resistance organizations were even formed within the Japanese aggressor army.

It can be well evidenced by the famous incident of mass desertion in 1944 by young Koreans who had been drafted into the navy at Jinhae and by the fact that in the division of the Japanese army stationed in Pyongyang, young Koreans had formed an anti-Japanese armed student-soldier corps and planned to join the KPRA.

According to a report made by New York Times on July 18, 1942, Korean workers masterminded by the Kim Il Sung Corps waged a large-scale revolt at an airfield on Jeju Island in 1942.

Dealing the anti-Japanese struggle organized by the national resistance forces, Soviet publications reported that seven wagons loaded with military supplies were blown up, a paper mill burnt down in Sinuiju and six oil tanks were blown up and oil depots were burnt down in Unggi (present-day Sonbong).

It was because the national resistance organizations destroyed the Japanese ruling machinery along with the general offensive of the KPRA in August Juche 34 (1945) that the enemy's ruling system crumbled quickly in Korea.

All the facts prove that the defeat of the Japanese imperialists was hastened by the active struggle of national resistance organizations that joined in the general offensive of the KPRA, true to the line of all-people resistance set forth by the President.