Tributes to British soldier killed by 'imam' in Afghanistan insider attack A proud, patriotic man, he died doing a job he loved, supporting his friends. He was killed as he worked on a construction task with other military engineers as part of preparations to hand the camp over to Afghan security forces. The Afghan soldier opened fire on international and ANA troops, killing Sapper Walker and injuring six others. They were all taken to the Bastion Role 3 medical facility, where Sapper Walker was pronounced dead. Leeds-born Sapper Walker worked as a technician for car manufacturer Vauxhall before joining the Army in July 2008. He completed training to become a driver before completing major exercises in Canada and Kenya with 28 Engineer Regiment. He had only known his daughter for 18 months before he was deployed for his first tour of Afghanistan in September. Lieutenant Colonel Chas Story, Commanding Officer, 28 Engineer Regiment, said: "Sapper Walker was the epitome of a true Sapper, one who would roll up his sleeves and get on with the task in hand no matter what, but importantly he would do it with great humour. He made sure that he made the most of every opportunity, both in the Army and at home; it is without doubt that he had a lot to offer and a bright future. Sapper Matthew Cunningham, 28 Engineer Regiment, described him as a "comrade, friend, father and much-loved son." He added: "I knew Richie for three years and was privileged to be able to call him my best mate. He was thoughtful, funny and a big character in any group he found himself amongst, but he always put others first. He was very wise and mature for such a young lad. I have so many good memories from over the last three years but the one that stands out the most for me was the day that he christened his daughter Lilly-Faith. He was so proud of her; that day I remember him standing that extra inch taller and his smile beaming more than usual. You will be sorely missed brother, gone but never forgotten until we meet again at the bar in the sky. Defence Secretary Philip Hammond said: "I was deeply saddened to learn of the death of Sapper Richard Walker. The tributes of his colleagues speak of a popular, committed soldier who was devoted to his unit and a dedicated family man. I send my deepest condolences to his family and loved ones at this sad time.