Numerous branches of the UK Armed Forces have wished the Duke of Edinburgh a happy 99th birthday.
Prince Philip has celebrated his birthday quietly at Windsor Castle alongside the Queen.
Unlike previous birthdays, there have been no official gun salutes with the traditional ceremony on pause in line with coronavirus measures.
The duke served in the Royal Navy until July 1951 and has kept a close association with the Armed Forces.
After leaving the Navy, Prince Phillip was appointed Admiral of the Sea Cadet Corps, Colonel-in-Chief of the Army Cadet Force and Air Commodore-in-Chief of the Air Training Corps.
To mark his 90th birthday in 2011, he was appointed Lord High Admiral by the Queen and has also been Colonel-in-Chief of numerous British and overseas regiments.
On social media, a number of military accounts sent Prince Philip happy birthday messages:
Cover image: Prince Philip at Field of Remembrance service in 2013 (Picture: Crown Copyright).