The Queen attended the parade which marked the disbandment of the Royal Irish Regiment's home service battalions.
She was accompanied by the Duke of York, who is the RIR's colonel-in-chief
Some 300 soldiers drawn from the Royal Irish Regiment's home service battalions paraded at the Balmoral Showgrounds in Belfast.
The three home service battalions of the Royal Irish Regiment will be disbanded next July.
The parade was led by regimental mascot Brian Boru VIII, an Irish Wolfhound
The Queen awarded the Conspicuous Gallantry Cross to the regiment in recognition of 36 years' continuous service in Northern Ireland.
Guests included Secretary of State Peter Hain, Church of Ireland Primate Lord Eames, UUP peer Lord Trimble, Ulster Unionist leader Sir Reg Empey and DUP leader Ian Paisley, pictured here