Complex sentence: Raids, ambushes and ongoing military activities by the Brigade Battalions and Flying Columns made South Tipperary ungovernable in 1920 and 1921, with the RIC confined to what barracks remained occupied and the British army only venturing out in large convoys.
Split into simpler sentences: Raids, ambushes and ongoing military activities by the Brigade Battalions and Flying Columns, made South Tipperary ungovernable in 1920 and 1921. With the RIC confined to what barracks remained occupied and the British army only venturing out in large convoys.