Complex sentence: In the spring of 1991 the UDA aligned with the Ulster Volunteer Force and its subsidairy group the Red Hand Commando to establish the Combined Loyalist Military Command, a group designed to co-ordinate military activity and hold ad hoc discussions about political strategy.
Split into simpler sentences: In the spring of 1991 the UDA aligned with the Ulster Volunteer Force and its subsidiary group, the Red Hand Commando to establish the Combined Loyalist Military Command. This was a group designed to co-ordinate military activity and hold "ad hoc" discussions about political strategy.