Two SAS servicemen have been acquitted at a court martial of negligence over a Brecon Beacons march in which three reservists died, after a judge ruled they had no case to answer.
Corporal James Dunsby, from Wiltshire, Lance Corporal Craig Roberts from Llandudno and Lance Corporal Edward Maher from Winchester, died from heat illness on the SAS selection march in July 2013.
The three army reservists were among 78 aspiring recruits taking part in a 16-mile trek through the Brecon Beacons, carrying loads of more than 22kg, on what turned out to be the hottest day of the year.
Two men, known only as Cipher 1A and Cipher 1B, faced a court martial at Bulford Barracks, accused of 'negligently performing a duty' by failing to take reasonable care for the health and safety of the candidates taking part.
But Judge Advocate General Jeff Blackett told the court martial there was "no evidence that a reasonable serviceman with similar levels of training, knowledge and experience would have done anything differently".
The judge told the families they have sat through the trial with the "utmost dignity and respect" but the deaths occurred because of "systemic failures within the Joint Forces Command."
The widow of Cpl James Dunsby's Bryher said it is "beyond unacceptable" there is no official guidance for those conducting endurance training marches on heat illness five years on.
A statement on behalf of the defendants, whose identities are protected by an anonymity order, said evidence throughout the trial showed the officers were "diligent and thorough" and "nobody else in this organisation did or would have done anything differently".
David Dunsby, the father of Cpl James Dunsby said he would "like to see others in the dock".
The Ministry of Defence said it has made a number of changes, particularly in relation to training in heat, to ensure "an incident like this does not happen again."