100 years on from the Battle of the Somme

ITV News correspondent John Irvine reports

It is the centenary of one of the bloodiest battles in human history.

More than one million men were killed or wounded in the Battle of the Somme which started in the summer and ended in November.

The British and French armies engaged the Germans in a brutal battle of attrition on a 15-mile front for five months.

On July 1, British royals, British Prime Minister David Cameron, and other dignitaries will come together from across Europe to commemorate the battle.

The battle provides a sobering historical perspective as Britain's continental unity is under a threat following Britain's vote to quit the EU.