Secret Military Organization, or Tajna Organizacja Wojskowa, TOW in Polish, was a clandestine military formation organized prior to World War II in the Second Polish Republic in the event Polish territory was occupied by foreign powers. The country-wide TOW organization was active in the early days of the September 1939 Campaign and during the Nazi occupation of Poland. Some of the offshoots or independently organized local "TOWs", such as Tajna Organizacja Wojskowa Gryf Pomorski ("TOW Pomeranian Griffin") or Tajna Organizacja Wojskowa Gryf Kaszubski ("TOW Kaszubian Griffin") were active throughout the whole period of the German occupation as well as the early years of the Soviet takeover.