The Three Alls policy was a Japanese scorched earth policy adopted in China during World War II, the three "alls" being "kill all, burn all, loot all". This policy was designed as retaliation against the Chinese for the Communist-led Hundred Regiments Offensive in December 1940.

The Hundred Regiments Offensive also known as the Hundred Regiments Campaign was a major campaign of the Chinese Communist Party's National Revolutionary Army divisions. It was 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.