Prince Andrew, the Duke of York, attended a special parade at Battlesbury Barracks today to mark the name change of Warminster-based battalion 3 Yorks to 1 Yorks.
After today the Third Battalion the Yorkshire Regiment will cease to exist and soldiers will in future form the majority of the First Battalion.
At Warminster in Wiltshire, where 3 Yorks is based, Commanding Officer Lt. Col Zac Stenning said it's a sad day but the regiment has to look to the future.
He said a private memorial service was held earlier this week to remember 3 Yorks soldiers who were killed in Afghanistan last year - including six who died when their Warrior fighting vehicle was blown up.
3 Yorks was originally the Duke of Wellington's Regiment - with battle honours dating back to 1695 - including the Battle of Waterloo, Crimea War and both World Wars.
In Warminster today there is a ceremonial march and parade at the barracks to mark the end of the battalion.
A soldier prepares to hoist a flag on a Warrior armoured vehicle ahead of a symbolic event today for the Yorkshire Regiment.The regiment has four battalions - but after today the Third Battalion the Yorkshire Regiment will cease to exist and soldiers will in future form the majority of 1 Yorks.