First attempts to take over JNA facilities occurred in August in Sinj and failed, but the major action took place in September 1991. Croatian Army and police were then more successful, although most of the objects taken were repair shops, warehouses and similar facilities, either poorly defended or commanded by officers sympathetic to the Croatian cause. Major bases, commanded by die-hard officers and manned by reservists from Montenegro and Serbia, became the object of standoffs that usually ended with JNA personnel and equipment being evacuated under supervision of EEC observers. This process was completed shortly after the Sarajevo armistice in January 1992.