The deaths occurred on the hottest day of the year so far in Wales, with temperatures reaching 30C in Powys, and reports have strongly linked the weather to the events.
James Acheson-Gray, UK managing director of APCO Worldwide, said: ‘The Army needs to be as transparent as possible and make clear its determination to give all possible support to the victim’s families and the various investigations – the top priority has to be to establish the facts in this tragic case.
‘While the inquiries are ongoing there are likely to be details that the Army can’t comment on directly, but at all times it needs to ensure that its messaging emphasises the courage of TA soldiers and puts the situation in the context of explaining why the TA is so important to the defence of this country and why these trainings are vital.’
The Ministry of Defence said in a statement: ‘The MoD can confirm that it is working with Dyfed-Powys Police to investigate an incident during a training exercise on the Brecon Beacons on Saturday in which two members of military personnel died.
‘The two servicemen's next of kin have been informed. More information will be released in due course but it would be inappropriate to comment further at this stage.’