Guards at Windsor Castle are formed from five infantry regiments - Grenadier, Coldstream, Scots, Irish and Welsh regiments - plus two regiments of the Household Cavalry -Life Guards and Blues and Royals. Traditionally the Guards have been protecting the castle and the monarch since 1660.
The military band that played during the ceremony had many different instruments.
Later during the day we were looking through a locked gate at a building when we saw two guards marching towards us. They unlocked the gate. One marched a short distance from us and stopped while the other guard locked the gate again.