Leading the UK at this year's Invictus Games is team captain Bernie Broad, a former Army major who lost both legs below the knee after an explosion in Afghanistan.
Major Broad told Forces Network why the competition is so important:
"We are so lucky to have an Invictus Games and to have the opportunity [to compete in them]. It [becoming wounded, injured or sick] changes the person you are and you want to find that person [again]."
"If you don't your family suffer, you suffer and... you become a bit of a liability to society. You don't give any more. You just start to take.
"That's why Invictus is so big and why Prince Harry [the founder of the Games] has got it so nailed on."
Speaking about his decision to put himself forward to lead the team, he said:
"I wanted to take back control. I wanted to do something bigger than I'd ever done since becoming a veteran.
"Emotions that I'd not felt for a very long time came flushing through the system [when I was told I was team captain]... That really did kickstart [getting] me back to full form."
"I had to do something as a veteran that [proved] I could still be that person I always was."
If you'd like to find out more about Major Broad's story, just click the video above...
The Invictus Games will officially begin in just three days' time, with the opening ceremony kicking off proceedings in Toronto.