Members of the Royal Guard collapsed during the military review, as temperatures exceeded 30°C. Prince William sent a message to the soldiers on his Twitter account: "A big thank you to all the soldiers who participated in the colonel's review this morning in the heat.
The conditions were difficult but you all did a good job. Thank you," he wrote. More than 1,400 soldiers participated in this parade, which is a rehearsal of the parade that will take place in front of King Charles III on June 17.