The Duke and Duchess of Cambridge attended the St Patrick's Day Parade at Hounslow Cavalry Barracks on Friday morning (March 17).

Prince William wore military uniform in his role as Colonel of the Irish Guards, and his wife, Catherine, presented traditional sprigs of shamrock to the officers and guardsmen of the 1st Battalion Irish Guards.

The regiment's mascot, four-year-old Irish wolfhound Domhnall, led more than 350 troops onto the Parade Square at the Cavalry Barracks on Beavers Lane, Hounslow .

Catherine, Duchess of Cambridge holds flowers as she and Prince William, Duke of Cambridge depart after presenting the 1st Battalion Irish Guardsmen with shamrocks during the annual Irish Guards' St Patrick's Day Parade

The parade concluded with a march-past where Prince William took a salute.

The duke and duchess met with members of the regiment, soldiers and their families before a visit to the Guardsman's lunch where the longest-serving Guardsman in the battalion proposed a toast to Their Royal Highnesses.

The regiment’s motto, 'Quis Separabit' or 'Who shall separate us?', is taken from the Order of St Patrick, an order of chivalry founded by George III.

The 1st Battalion Irish Guardsmen march during the annual Irish Guards' St Patrick's Day Parade at Hounslow Cavalry Barracks on March 17, 2017 in London, England.

The Irish Guards formed in April 1900 served in both World Wars, were deployed in Iraq and Afghanistan, have been on exercises in Bosnia, Latvia, Oman and Kenya and recently completed jungle training in Belize.

Catherine, Duchess of Cambridge presents the 1st Battalion Irish Guardsmen with shamrocks during the annual Irish Guards' St Patrick's Day Parade
The Irish Guards learn how to survive in the jungle

Their duties include state ceremonials and public duties at Buckingham Palace, Windsor Castle, St James's Palace and the Tower of London .

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