Two SAS soldiers will face trial by court martial over the deaths of three reservists on a 16-mile march in the Brecon Beacons.

The men, known only as 1A and 1B, both deny "negligently performing a duty" by failing to take reasonable care for the health and safety of the candidates taking part in the exercise.

Lance Corporal Craig Roberts and L/Cpl Edward Maher were pronounced dead on the Welsh mountain range after suffering heatstroke in July 2013.

Corporal James Dunsby died at Birmingham's Queen Elizabeth Hospital from multiple organ failure more than two weeks later.

1A and 1B, whose identities are protected by an anonymity order, will face trial at the Court Martial Centre in Bulford, Wiltshire.

1A, a serving captain who was the training officer in charge of the march, and 1B, a former warrant officer, who was the chief instructor on the exercise, each deny a single charge of negligently performing a duty.

The charges say they "performed a duty negligently, namely the duty to take reasonable care for the health and safety of candidates taking part in an exercise".

L/Cpl Roberts was originally from Penrhyn Bay in North Wales, L/Cpl Maher, was from Winchester in Hampshire, and Cpl Dunsby was from Trowbridge in Wiltshire.