What a kind gesture.

If you haven't been keeping up with Prince Harry this week, he has been in Toronto, supporting and watching athletes compete at the Invictus Games. Harry invented the event along with his advisors back in 2014, and always plays an active part throughout the week. However, this year he found out that one of the past competitors couldn't make it to the games this year as he is caring for his wife who has cancer.

A post shared by Kensington Palace (@kensingtonroyal) on Sep 29, 2017 at 7:20pm PDT

When the prince found out, he immediately put pen to paper to write a very emotional, yet encouraging letter to the athlete and his wife. Colonel Lauren Catelain, the former chief of the French mountain commandos, lost both of his legs fighting in the war in Afghanistan. He competed in both the 2014 London Invictus Games and the 2016 Orlando Invictus Games. But this year, he stayed at home with his wife, Guylaine Catelain.

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French cycling captain David Travadon told People:"I asked Prince Harry to write her a note to encourage her. "He took his time to write it and put a lot of care and thought into it. It will be very important to her. "He sent her his best wishes and told her the spirit of the games is with her." We think Princess Diana would be proud of this kind gesture.