The Forest Brothers (also Brothers of the Forest; Forest Brethren; Forest Brotherhood; Estonian: metsavennad, Latvian: meža brāļi, Lithuanian: miško broliai) were Estonian, Latvian, and Lithuanian partisans who waged a guerrilla war against Soviet rule during the Soviet invasion and occupation of the three Baltic states during, and after, World War II. Similar anti-Soviet Eastern European resistance groups fought against Soviet and communist rule in Bulgaria, Poland, Romania, and western Ukraine.

The Red Army occupied the independent Baltic states in 1940–1941 and, after a period of German occupation, again in 1944–1945. As Stalinist repression intensified over the following years, 50,000 residents of these countries used the heavily forested countryside as a natural refuge and base for armed anti-Soviet resistance.

Resistance units varied in size and composition, ranging from individually operating guerrillas, armed primarily for self-defense, to large and well-organized groups able to engage significant Soviet forces in battle.

Source: Wikipedia, published under the GNU FDL. Retrieved 2014-03-02