The three members of the Royal Navy who died when their helicopter crashed into a field in Devon on Wednesday have been named.Lieutenant Lily-Mae Fisher, 31, who was Britain’s only female commando, died alongside 42-year-old Lieutenant Commander Chris Gayson and 24-year-old Petty Officer Owen Green following the incident at Sourton Down, near Okehampton, just before 4am on Wednesday.Defence secretary John Healey described all three as “dedicated and highly valued members of their squadrons who embodied the best of our Armed Forces”.The Merlin Mk4 helicopter crashed into a field during a training exercise, leaving the aircraft completely destroyed.Members of the UK armed forces have started paying tribute to the three killed in the crash.(left to right) Lieutenant Lily-Mae Fisher, 31, from Surrey, Petty Officer Owen Green, 24, from Hampshire, and Lieutenant Commander Chris Gayson, 42, from Somerset, the three members of the Royal Navy who died when their helicopter crashed in a field on Wednesday (Ministry of Defence/PA Wire)Commanding Officer of Commando Helicopter Force, Colonel Will Penkman, said: “It is a tragedy that we lost three members of the CHF family yesterday.“Cherished members of the force with bright futures ahead of them, they were all highly committed professionals infused with the Junglie spirit of the force.“Their loss leaves a terrible gap in our hearts and my thoughts go out to their family and friends who dearly loved them.”Lt Lily-Mae Fisher, 31, who was based in Yeovil, Somerset, was a member of the Royal Navy from May 2019 before her death in the incident on Wednesday.She described it as a “massive privilege and a huge honour to serve my country” – with her achievement as the only British female Royal Navy commando being praised by Nato.Among her helicopter flying training, Lt Fisher represented Great Britain at the European Age Group Triathlon Championships in 2021.Flowers left near the scene in Sourton Down, near Okehampton in Devon, where a Royal Navy helicopter crashed in a field (PA)After a stint in a supporting role to a specialist maritime unit, she successfully completed the 16-week All Arms Commando Course – something very few women have completed to date.Completing the course at the Commando Training Centre Royal Marines meant she became Britain’s only serving female Royal Navy commando.Speaking last year, Lt Fisher said: “The body achieves what the mind believes. I love to test myself and challenge myself constantly.”She added: “If the call was to ever come to go to war, you know, it is my responsibility and my duty to serve in the armed forces, be it in peacetime or at wartime.”Lieutenant Lily-Mae Fisher, 31, who was Britain’s only female commando, died alongside 42-year-old Lieutenant Commander Chris Gayson and 24-year-old Petty Officer Owen Green following the incident at Sourton Down, near Okehampton, just before 4am on Wednesday (PA)She posted on social media about her some of achievements, including being able to step into the cockpit of a Merlin helicopter for the first time in August last year.Outside her career in the military, Lt Fisher also posted about her participation in ultra-marathons in events across the world.She also took part as a contestant on the ITV shows Take Me Out and Ninja Warrior UK.