Almost 1,000 troops from the 1st Battalion Royal Welsh Battlegroup have been training in Canada as part of Exercise Prairie Storm.
It's part of large-scale combined arms training to prepare for a NATO deployment later this year.
1 Royal Welsh are taking the lead on the exercise at the British Army Training Unit Suffield (BATUS).
It's to demonstrate their ability as a lead armoured infantry battlegroup, working with 10 supporting units.
The troops are combining engineering, communications, medical training, artillery and armoured vehicles for this exercise.
The live-fire training included high-velocity anti-aircraft missiles, anti-tank weapons and mortars, with the vast space on BATUS meaning it's the only place this kind of training can take place safely and effectively.
Back in the UK, they will continue mission specific training ready for their deployment to Estonia in November.