The Band of the Royal Regiment of Scotland celebrated the arrival of the new Royal baby by playing “Congratulations” (Picture: MOD).
The military has been congratulating the Duke and Duchess of Sussex after the birth of their son on Monday.
Prince Harry described the birth as "the most amazing experience I could ever have possibly imagined".
Messages of congratulations have been given from across the military.
The Band of the Royal Regiment of Scotland celebrated the arrival of the new royal baby in Windsor by playing the musical classic “Congratulations” during the ceremony of Changing the Windsor Castle Guard.
Behind them were the Scarlet tunics of the Welsh Guards and the Scottish Regiment's official mascot the Shetland pony Cruachan the fourth.
The baby boy is believed to have been born in the sanctuary of the Duke and Duchess of Sussex’s home at Frogmore Cottage not far from the castle here on the Windsor Estate, early on Monday morning.