The world was coming apart in 1916. In one little chaotic part of northern France, eight unionist soldiers from the soon-to-be chaotic northern part of the island of Ireland headed into one of the bloodiest battles in human history. Opening Friday, Aug. 30 at The Vortex Theatre (2900 Carlisle Blvd. NE) at 7:30pm, Observe the Sons of Ulster Marching Towards the Somme mixes the horror of World War I with the personal stories that brought the men there. For more information and specially-priced $17 opening weekend tickets, see vortexabq.org.