
Hakkō ichiu or Hakkō iu was a Japanese political slogan meaning the divine right of the Empire of Japan to "unify the eight corners of the world." It was prominent from the Second Sino-Japanese War to World War II, popularized in a speech by Prime Minister of Japan Fumimaro Konoe on January 8, 1940.

The Hundred Regiments Offensive was a major campaign of the Communist Party of China's National Revolutionary Army divisions commanded by Peng Dehuai against the Imperial Japanese Army in Central China. The battle had long been the focus of propaganda in the history of Chinese Communist Party but had become Peng Dehuai's "crime" during the Cultural Revolution. Certain issues regarding its launching and consequences are still controversial.

The Japanese invasion of French Indochina was a short undeclared military confrontation between Japan and France in northern French Indochina. Fighting lasted from 22 to 26 September 1940, simultaneous with the Battle of South Guangxi in the Sino-Japanese War.

The Kaimingjie germ weapon attack was a Japanese biological warfare bacterial germ strike against Kaimingjie, an area of the port of Ningbo in the Chinese province of Zhejiang in October 1940, during the Second Sino-Japanese War.

The Tripartite Pact, also known as the Berlin Pact, was an agreement between Germany, Italy and Japan signed in Berlin on 27 September 1940 by, respectively, Joachim von Ribbentrop, Galeazzo Ciano and Saburō Kurusu. It was a defensive military alliance that was eventually joined by Hungary, Romania, Bulgaria and Yugoslavia as well as by the German client state of Slovakia. Yugoslavia's accession provoked a coup d'état in Belgrade two days later. Germany, Italy and Hungary responded by invading Yugoslavia. The resulting Italo-German client state, known as the Independent State of Croatia, joined the pact on 15 June 1941.

The Battle of Wuyuan was a Chinese counterattack that defeated the Japanese invasion of the Wuyuan area. This happened in reaction to the Chinese 1939-40 Winter Offensive in Suiyuan during the Second Sino-Japanese War. The Japanese call it 第2次後套作戦.

The Battle of Zaoyang–Yichang, also known as the Battle of Zaoyi, was one of the 22 major engagements between the National Revolutionary Army and Imperial Japanese Army during the Second Sino-Japanese War.