. "Internal Security" . . "750" . "4th (County Fermanagh)" . . . . "1970" . . . "\\\"Quis Separabit\\\" ()" . . "4th Battalion, Ulster Defence Regiment" . . . . . . . "4th (Co Fermanagh) Battalion" . "\\\"Who Shall Separate Us?\\\"" . "Infantry" . "4th Btn, Ulster Defence Regiment" . . . . . "4th (County Fermanagh) Battalion" . . "4th Battalion" . . . . "4th Battalion, Ulster Defence Regiment" . . . "1992" .