The Christmas Raid was an attack on 23 December 1939 by the Irish Republican Army (IRA) against the Irish Army and the Phoenix Park Magazine Fort—Ireland's largest munitions dump. The attack resulted in the capture of the munitions dump by the IRA and the seizure of a huge quantity of weapons. Although the operation was initially successful, two of the raiders were captured shortly after the raid and, in the following days, most of the stolen military equipment was recovered and several IRA volunteers were arrested.