Anthony and Christopher Hellier, from Taunton in Somerset, graduated from the academy on Friday with more than 150 other Officer Cadets.
A total of 620 cadets took part in the spectacular display, which was commanded by Academy Adjutant Major Richard Winstanley.
Her Royal Highness The Princess Royal attended the event to give a royal salute, inspect the parade and address the cadets.
She said: "It is a privilege and a pleasure to attend the Sovereign's Parade. I lived in Sandhurst myself for four years, a long time ago.
"The initial observation is that not much has changed but on further inspection I can see the people have changed.
"Its greatest strength is that it maintains tradition."
She went on to describe the parade as one of "excellence" and commended the cadets on the hard work that had gone into making it a great day.
She ended by reciting the Sandhurst motto — ‘Serve To Lead'.
Special accolades went to Junior Under Officer Nicholas Barton, from West Sussex, Officer Cadet Christopher Yates, from Oxfordshire, and Officer Cadet Chibuzor Enemchukwu, from Nigeria.
Officer Barton received The Sword of Honour award, Officer Yates received The Queens Medal and Officer Enemchukwu was presented with The Overseas Sword.