80th Anniversary Glen Imaal Training Accident – 16 September 1941 During 1939, with the outbreak of the Second World War, the Defence Forces 1 Anti-Aircraft Battery was expanded to an Anti-Aircraft Brigade.  This particular Brigade consisted of two Medium Batteries, two Light Batteries and a Searchlight Battery with the Brigade Headquarters garrisoned in Portobello Barracks, … Continue reading 80th Anniversary: Glen Imaal Training Accident 16 Sep 41