India, June 14 -- King Charles III defied royal custom by participating in the 2025 Trooping the Colour parade amid his ongoing battle against cancer.

The British monarch, who usually rides a horse, participated in a parade from Buckingham Palace to Horse Guards Parade and returned on Saturday, June 14, in honor of his birthday. However, 76-year-old King Charles and his 77-year-old wife, Queen Camilla, traveled in a carriage, breaking the years old tradition.

For his third trooping as King, the monarch wore a classic military uniform for the important occasion, while Camilla donned an all-white ensemble with a matching hat.

Following the death of his mother, Queen Elizabeth II, Charles revived the riding tradition for the Trooping the ...