Lieutenant Colonel Chas Story RE, Sapper Richard Walker's Commanding Officer, paid the following tribute to him:
– Lieutenant Colonel Chas Story RE, Commanding Officer, 28 Engineer Regiment
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.
He was hugely respected as a fit, professional soldier with a massive character.
This was his first tour of Afghanistan but anyone would have thought he was a seasoned expert, such was his ability and professionalism.