Britain's Prince Harry has for the first time spoken of the horrors he witnessed on the battlefield in Afghanistan that encouraged him to organise the Invictus Games, a Paralympic-style tournament for injured servicemen and women.
Writing for "The Sunday Times", the fourth in line to British throne explains how his experiences at war had sparked his desire to organise the Invictus Games.
"Sure, I'd heard about it, expected it, called in many medical evacuations for it, but I had never seen it first-hand," writes the 29-year-old prince.
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As Captain Wales, Harry served in Helmand province in 2007-2008 and then again briefly in 2010-13 with the Army Air Corps.
The Royal regularly flew injured personnel and civilians to the hospital at the Camp Bastion military base during his second tour of the country when he served as an Apache helicopter pilot.
"Many of us who have been on operations can close our eyes at any point now and hundreds of images will flash through our minds, a visual diary of our experiences. But I really can't imagine what it must be like to have images of friends - lost or wounded - move across your mind like a bloody slideshow," he said.
"I witnessed some terrible sights, but the image of your mate getting blown up in front of you is an image I am lucky not to have," writes Harry.
The Invictus games - aiming to showcase the bravery and sporting prowess of more than 400 servicemen and women from 14 countries who have been left wounded by war - will take place next month at London's Olympic park.