Righteous armies (Korean: 의병), sometimes translated as irregular armies or militias, were informal civilian militias that appeared several times in Korean history, when the national armies were in need of assistance.
Anti-Japanese militiaman
Japanese invasions of Korea (1592–1598)
The Japanese invasions of Korea, commonly known as the Imjin War, involved two separate yet linked invasions: an initial invasion in 1592, a brief truce in 1596, and a second invasion in 1597. The conflict ended in 1598 with the withdrawal of Japanese forces from the Korean Peninsula after a military stalemate in Korea's southern provinces.
The Japanese landing at Busan
Daimyo Konishi Yukinaga commanded the Japanese First Division.
Daimyo Katō Kiyomasa commanded the Japanese Second Division.
Katō Kiyomasa's (1562–1611) banner and battle standard