[2] He represented Canada at the World Shooting Championships in Oslo (1952), Moscow (1958) and Wiesbaden, West Germany (1966).
He earned a place on nine Bisley teams, and competed in matches or friendlies including Commonwealth Games in 13 countries.
At the 1960 Summer Olympics, Warner led Group Two of 50m prone rifle in qualifying with 394 out of 400, or an average of 98.5 points per target.
He received the Canadian Forces' Decoration for long service, and the Queen Elizabeth Diamond Jubilee Medal for a lifetime of high level competitiveness, good sportsmanship and contribution to the military and civilian shooting sports.
[5] The Major Edson Warner CD QM5 Trophy was initially awarded to the top individual in Service Rifle, Stage 1 - CAF Reserve.,[6] and has since been moved to the winners of Match 32, team casualty evacuation at the Canadian Forces Small Arms Concentration.