The Polish Military Organization (PMO) can be traced to formations of August 1914 or even earlier, but it was officially founded in November 1914, as a merger of two previously-existing youth para-military organisations: the Drużyny Strzeleckie and the Związek Strzelecki. Active in the Russian-held Kingdom of Poland, the PMO served as the intelligence and sabotage arm of Piłsudski's Polish Legions. In fact, many members of the illegal and secret PMO were at the same time soldiers of the Austrian-backed Polish Legions. The PMO was commanded militarily by Piłsudski himself, while the political command was a secret ""A" Convent" headed by Jędrzej Moraczewski.