More than a million men were killed and wounded on all sides in the WW1 battle.
The Battle of the Somme, one of World War One's bloodiest, was fought in northern France and lasted five months, with the British suffering almost 60,000 casualties on the first day alone.
The British and French armies fought the Germans in a brutal battle of attrition on a 15-mile front. Piker remembers 36th Ulster Division who fought valiantly to the end.
