Capt Ed Poynter plans to leave the Army and train as a teacher
A veteran of the war in Afghanistan is walking the length of Hadrian's Wall to raise money for soldiers seriously injured in the conflict.
Capt Ed Poynter, of the 2nd Battalion The Rifles, recently completed a six-month tour of Helmand province, where 40 comrades were killed or wounded.
The 27-year-old, of London, is now raising cash for the British Limbless Ex-Service Men's Association (BLESMA).
He hopes to complete his 87-mile (140km) trip in Wallsend on Tuesday.
Capt Poynter, of Hammersmith, who is walking the wall with two of his brothers Phil and Tom, set off from Bowness on Solway in Cumbria on Sunday.
He said: "I was one of the lucky ones. I returned from Afghanistan unscathed. Many of my friends and colleagues did not.
"Amongst those who died was my great friend Lt Paul Mervis and completing this challenge is the least I can do to mark his memory and help those who paid such a dear price.
"At one stage during the summer there seemed to be an awful incident almost every day. In one bomb blast we lost five men.
"I hope my effort will go some way to helping those with horrific injuries readjust to normal life."
Before serving in Afghanistan he spent time with the battalion in Iraq. He plans to leave the Army next year to become a teacher.