The Queen´s Foot Guards

Traditionally, there are 4  guards in front of Buckingham Palace and St. James Palace when the Queen is in residence and 2 when she´s away.  
There are 5 regiments of Foot Guards: Grenadier, Coldstream, Scots, Irish and Welsh. 
They stand still for no more than 10 minutes at a time, are on duty for 2 hours and then rest for 4. 
All Summer, the Queen´s Foot Guards in London, England wear their red tunics. 
The grey coats are used in the Winter because of their larger length and thickness.
The 1.5 lb/45.7 cm bearskin hat used by the guards is intended to make them appear taller and scary; they are made from real "culled" Canadian brown bears. 
The bearskin hats were first used in 1815, after Napoleon´s defeat in the battle of Waterloo.