The Patriotic League was the first military unit of Territorial Defence Force of the Republic of Bosnia and Hercegovina formed after the Bosnian Territorial Defense Forces were gained by the SDS party.
On December 19th 1990 Alija Izetbegović and the SDA party discussed forming an independent army which would be separate from the Yugoslav military at the time. In March 1991 Sefer Halilović formed the Patriotic League (Patriotska Liga - PL) as an independent Bosnian army, with the same territorial organization as the TO. Later on the Patriotic League was connected to the TO, but until then they were an illegal force in Yugoslavia which fought for Bosnian independence from Yugoslavia. The Patriotic League, along side the TORBIH, would later become the Army of the Republic of Bosnia and Herzegovina.
The Patriotic League received training at Croatian Special Police centers and by March 1992 claimed 98,000 troops-more than the shrinking TO- organized in 9 regions and 103 (out of 109) districts.