Some of the Second International's most famous actions were its 1889 declaration of 1 May as International Labour Day and its 1910 declaration of 8 March as International Women's Day. The Second International was split by the outbreak of World War I. A small part carried on as the International Socialist Commission. The International re-formed in 1923 (as the Labour and Socialist International), and was re organised again, in its present form, after World War II. Many social democratic and socialist parties had been suppressed in Nazi-occupied Europe.