Welsh Guards Other Ranks Bearskin Cap. All 5 of the British Guard Regiments (Coldstream, Scots, Grenadier, Irish and Welsh) wear the bearskin cap. This began after the Battle of Waterloo, where the Grendadier Guards played a role in turning Napoleon's Imperial Guard - who also worn bearskin caps. This tradition was extended to the other two regiments at the time, and with the formation of the later Irish and Welsh Guards to those units as well. This example is from the Welsh Guards.