The chief instructor of an an army reserve unit during the SAS selection march in which 3 men died, has told their inquest he was unaware of military guidelines on heat related illness.
The official guidelines state that all activity must be suspended if anybody becomes incapacitated due to heat injury.
ITV News Wales & West of England Correspondent Rupert Evelyn is at the inquest:
NEW: SAS test chief unaware of flowchart (jsp539) which coroner quotes as saying "if you have a case of heat injury you stop the activity"
On the day the 3 men died in July 2013 at least 12 men suffered heat related illness but no order was given to call off the march.
An army reservist has described how he repeatedly tried to revive a fellow soldier who died from heat stroke just 500 meters from the end of an SAS training march.
Speaking at an inquest into the deaths of three reserve soldiers, special forces candidate '1D', said that he found one of the men - Lance Corporal Craig Roberts - lying face down by a stream.
The man immediately tried to cool L/Cpl Roberts down by pouring water on him and shading him with his hat.
Having pressed the emergency button on L/Cpl Roberts' tracker, 1D rolled his colleague over and put him into the recovery position.
In evidence to the fourth day of the inquest, 1D said efforts to revive L/Cpl Roberts on the Brecon Beacons lasted for around two hours, but ultimately failed.
An inquest into the deaths of three army reservists on the Brecon Beacons in South Wales in July 2013 has been hearing from a witness who found the body of L/Cpl Craig Roberts.
ITV News Correspondent Rupert Evelyn is at the inquest.
Listening to witness who found the convulsing body of Craig Roberts. Says his water bottle was about three quarters full #SASinquest
Solider 1d says the weather was "freakish... Out of the ordinary". Craig was about 30 metres from a stream. #SASinquest
An army reservist has told an inquest that he was hallucinating and struggling to walk during an SAS exercise on which three soldiers died.
The man, referred to as soldier 4E, told the inquest into the three men's deaths that he had "struggled" from the start of the 16-mile exercise.
The inquest has heard that at least seven other soldiers suffered heat-related illness during the march on the Brecon Beacons in South Wales on July 13 2013.
Giving evidence on the third day of the inquest, soldier 4E explained that he was medically withdrawn on the second-to-last leg of the march.
"My main objective really was to get back to a checkpoint where I knew there was water and there was a medic. I was feeling very confused and I was hallucinating as well, so I wasn't in a very good state really."
A soldier who suffered an acute kidney injury during an SAS selection process in which three men died has told an inquest that when he asked to be sent to hospital he was told "the press would have a field day" if they found out.
Soldier 2D said he "kept asking to see a doctor but was told they were otherwise engaged".
The reservist said he "repeatedly asked to see a doctor" when he collapsed after the exercise, conducted in sweltering heat in July 2013, but was told he "was under the army's jurisdiction and it was up to them if I was sent to a civilian hospital".
2D said he believed the fatal exercise was "not designed with the conditions in mind". He said the SAS had "an uncompromising do-or-die attitude" which was demonstrated by the fact that the day after the men died on the Brecon Beacons, the recruits were sent out on another march.
A soldier who was part of the ill-fated special forces training trek on which three reservists died, has told the inquest into their deaths he was urged to continue the march despite medical advice to withdraw.
ITV News Midlands Reporter Ben Chapman is at the hearing:
Soldier on exercise says he was told to continue with the march despite medic withdrawing him because of heat exhaustion. He later collapsed
Reservists who took part in a special forces training march in Wales in which three servicemen died have told the inquest that they weren't aware that not all checkpoints would have water to replenish their drinking bottles, despite the excessive heat that day.
'Soldier 1W' says that some of the check-points on the route lacked any water supplies from which the soldiers could refill - despite several talks about heat exhaustion and dehydration prior to the trek.
Soldier 1W says he was not aware that not all checkpoint on the trek would have water to replenish his bottles. #BreconBeacons
The soldier - who cannot be named for security reasons also said his nose started to bleed and he became dizzy during the march over Pen-Y-Fan in the Brecon Beacons National Park. A fellow soldier helped him and asked some civilian walkers for water.
One of the four reservists who was hospitalised during an SAS march has told the inquest into the deaths of three of his colleagues that he "pressed on" despite feeling unwell in the hot conditions so he wouldn't be removed from the excersise.
The SAS man, who can only be described by the code Soldier 1X, said it was commonplace to feel low at some point during exercises, but he had always "battled on".
ITV News Midlands Reporter Ben Chapman is at the inquest:
At day 2 of inquests into deaths of 3 soldiers in #BreconBeacons Soldier who collapsed says he pressed on so not to be removed from exercise
Families of three soldier who died during an SAS exercise in 2013 told an inquest about the men and how they found out about the deaths.Read the full story ›
One of four reservists who were hospitalised during an SAS march told the inquest into three colleagues' deaths how he was found unconscious by civilian walkers near south Wales' highest peak after becoming overwhelmed by the heat.
While giving evidence from a screened-off witness box constructed specifically to protect military witnesses' identity, the soldier was referred to by the cipher 1X.
Explaining how he came to be found unconscious, 1X told the inquest: "I felt like I was just going to collapse there and then."
The soldier lost consciousness and was found by walkers who activated his emergency alarm to summon help.
The reservist was airlifted to hospital shortly after 6pm, having set off at around 7.40am.
"There wasn't a trace of wind at all that day and I didn't manage to cool down as I'd expect," the soldier told the coroner.
Asked by the coroner for his view as to why he had become overwhelmed by the heat, the soldier answered: "I think I just pushed myself too hard to be honest."
Before the march candidates were given a presentation on the effects of heat illness on "others and yourself" the soldier said.