Complex sentence: The Irish Army's Forgotten Battle (2005), and covers the true story of the Siege of Jadotville--a conflict involving Irish Army UN Peacekeepers and Katangese forces during the Congo Crisis in September 1961.
Split into simpler sentences: The Irish Army's Forgotten Battle (2005). This covers the true story of the Siege of Jadotville, a conflict involving Irish Army UN Peacekeepers and Katangese forces during the Congo Crisis in September 1961.