(England Twitter)Full-scale walk through in preparation for the royal wedding of Prince William and Kate Middleton saw Army, Navy and RAF members lining the route the couple will take to and from Westminster Abbey.
Participants wore full military dress, but marching bands refrained from playing their instruments as the whole exercise was complete before 6.30am.
The eyes of the world will be on Prince William and Kate Middleton when they begin their journeys to and from Westminster Abbey.
Forces left Westminster's Wellington Barracks shortly before 5am to begin their way along the route.
Some of the soldiers, sailors and airmen practising their duties were Prince William's colleagues.
First to arrive at the abbey were two of the royal fleet cars - Rolls-Royces which arrived at about 4.50am.
Shortly after 5am the action began.
When the Ministry of Defence announced the Armed Forces' extensive ceremonial role, General Sir David Richards, head of the military, described it as a "huge honour" for those involved.
When the couple leave the abbey as man and wife, two groups of 12 military personnel will line their route as they make their way to their horse-drawn coach. The tribute is traditionally performed at many military weddings.
Dozens of soldiers on horseback from the Household Cavalry made their way to Westminster Abbey via a different route from the wedding cars this morning.
The cavalry, who led the cars and carriages back to Buckingham Palace through the arch of Horse Guards Parade and along the Mall, performed a loop, parading down Buckingham Palace Road and along Victoria Street to get them to the Abbey.
As the horses walked through the parade ground at Horse Guards, clouds of dust kicked up covering the Welsh Guards, who were lining that part of the procession.