Video: Witness: The heat of the sun beat the British Royal Guard laden with clothes and furs

At least three soldiers lost consciousness in London during a military parade in the presence of the heir to the British throne, Prince William.

The sun was shining, the temperatures were high, and the guards wore their usual uniforms. Bear fur sweaters and hats.

The parade, which was overseen by Prince William, Honorary Colonel of the Welsh Guards, is a rehearsal for an annual military parade held each year to celebrate the King’s birthday.