the prince of wales succeeded his father on saint davids day, 1975, as colonel of the welsh guards.rom 1973—1975, and then the duke of cambridge, a very special year for and then the duke of cambridge, a very special yearfor him and then the duke of cambridge, a very special year for him because it is his regiment trooping the colour today. the first section of carriages arriving at horse guards parade, just passing the youth enclosure there on the left. hundreds of members of the girl guides and the brownies and the boys' brigade, greeting the carriages as they pass. and we can see that the guards formation has changed because number three guard has opened, that is to make way for the first royal guests as the band prepares to play the national anthem to greet them. mbemba royal party will have the best view in the house really. they will be watching the parade from the major general‘s office overlooking horse guards parade, the office once used by the duke of wellington. god save the queen. prince harry salutes the colour and on st patrick's day, march 17, the duchess of cambridge