It is one of the popular royal pageantry. It takes place at Buckingham Palace every day, including Sunday at 11:30. The troops who take part are selected from the 5 regiments of Foot Guard. In some militaries, foot guards are senior infantry regiments. Foot guards are commonly responsible for guarding royal families or other state leaders, and they also often perform ceremonial duties accordingly, but at the same time are combat soldiers.
The Grenadier Guards
The Coldstream Guards
The Scots Guards
The Irish Guards
The Welsh Guards
The Grenadier Guards have a white plume, worn on the left side of their hats, their collar badge is a Grenade and their tunic buttons consist of a single line.
The Coldstream Guards wear a red plume on the right side of their caps, with a Garter Star collar badge, and wear their buttons in twos.
The Scots Guards have no plumes, their collar badge is a Thistle, and they wear their tunic buttons in threes.