Lisburn soldier killed in Afghanistan is named
The 42-year-old, of A Company 40 Commando Royal Marines, died on Friday morning after an explosion near Patrol Base Almas, in Sangin, Helmand.
His wife Leona said he was a "fantastic Dad".
His death brought the total number of British service personnel killed in Afghanistan to 286.
Cpl Walker, who had two children, lived in Exmouth, Devon.
Advertisement
Hide AdAdvertisement
Hide AdMrs Walker said: "Steve was passionate, loyal and determined. He enjoyed the role he had in the Marines but he was a family man at heart.
"Although this is a very sad time, Steve would want us to be positive. Remember the good times, the happy times.
Lieutenant Colonel Paul James, commanding officer of 40 Commando Group, Combined Force Sangin, said Cpl Walker "was one of the most professionally astute men I have ever met".
"Brave, loyal, utterly dedicated and absolutely selfless, he died leading his section on patrol in southern Sangin.
"Having served 20 years in the Royal Marines, he was my most experienced and probably my best corporal. I valued his counsel greatly and, despite being his commanding officer, he taught me tactics."