[2] Grenadier Guards' is the first foal of his dam Wavell Avenue, an Ontario-bred sprinter who won the Breeders' Cup Filly & Mare Sprint as a four-year-old in 2015.

[5] Grenadier Guards started favourite for a seventeen-runner maiden over 1400 metres at Hanshin Racecourse on November 7 and recorded his first success as he took the lead in the straight and drew away to win by three lengths from the front-running outsider Lord Respect.

[6] Despite his modest form, Grenadier Guards was stepped up to Grade 1 level on 20 December at Hanshin to contest the Asahi Hai Futurity Stakes over 1600 metres and went off a 16.5/1 outsider.

[8] On his first appearance as a three-year-old Grenadier Guards started favourite for the Grade 3 Falcon Stakes over 1400 metres at Chukyo on March 20 but was beaten a head into second place by Rook's Nest.

After settling in sixth place he was switched to the outside and made progress in the straight but was outpaced in the closing stages and came home third behind Schnell Meister and Songline.

[9] Following a summer break, Grenadier Guards returned to the track for the Grade 3 Keisei Hai Autumn Handicap over 1600 metres at Nakayama Racecourse on September 12 when he was matched against older horses for the first time.