Let me explain.
AJK poonch was liberated by ex british army officers and soldiers under direct command of sardar Ibrahim Khan, Col Khan Muhammad Khan,Captain Hussain khan (Military cross british),Lt Col Shair Khan (Victoria cross british) etc.
Be informed these soldiers and officers were veterans of WW1 and WW2.
After liberation of many districts they move towards rajori with Mirza Hassan Khan's men.
Mirza changed his mind and prefer to liberate his own home before rajori and sirinagar.
Under these circumstances FATA tribes came as a reinforcement for AKRF to liberate entire Kashmir, but due to UN pressure the agreed for ceasefire and table talks.
Those table talks was the reason behind the failure of Kashmir liberation.