25-year-old Sgt Ralph ‘Jock’ Hay, who served with 2nd SAS The site of the shootings as it looks now. Among those captured was 25-year-old Sgt Ralph ‘Jock’ Hay from Burghead in Morayshire. His party found itself surrounded by SS Panzer troops and was forced to surrender after it ran out of ammunition following an hour-long battle.He and seven others were later driven to a remote forested spot and executed on October 15.According to the testimony of German soldiers accused of the murders after the war, the captured men were one-by-one told to strip off their uniforms and were led at gunpoint from a truck into the trees.As each was led away, those remaining listened in silence until a gun shot was heard and another captive was ordered out.As the eighth and final man was led to a pit now filled with the naked bodies of his comrades, he looked at his German guard and told him: “We were good men.”The victims were exhumed from their shallow grave in late 1945 and reburied by the Commonwealth War Graves Commission at the Durnbach War Cemetery.In the intervening years, the actual site of the shootings became lost. Historians believed they had found it in the 1980s and a memorial was erected, but the author believes he has now found the correct site 12 miles away, west of the hamlet of La Grande Fosse. New memorial stones will be placed at the sites of two notorious massacres of captured British SAS troops, after the locations were rediscovered in a 13-year-project to commemorate all Second World War deaths from the elite regiment.The locations in eastern France have been tracked down in research to compile the stories of each of the 374 members of the elite regiment, and its forerunner the Long Range Desert Group, killed in the conflict.The research behind the roll of honour has found previously unpublished photographs of the exhumation of some of the soldiers, as well as new pictures of the SAS team sent to investigate the war crimes after the end of the conflict. Want the best of The Telegraph direct to your email and WhatsApp? Sign up to our free twice-daily Front Page newsletter and new audio briefings. Lt James ‘Desmond’ Black of 2nd SAS The author now intends to place memorial stones at the two sites in the Vosages Mountains after he trawled war crimes trial records and military files and talked to elderly local residents to pinpoint the locations.The killings happened in the aftermath of an audacious SAS mission, codenamed Operation Loyton, to parachute behind enemy lines and attack communications lines in August 1944.The mission is believed to have been betrayed and the men of 2nd SAS found they had parachuted into an area full of German troops.After weeks of hit and run raids, starved of supplies and hunted by German troops, the SAS party withdrew to Allied lines, with many men listed as missing, believed captured.But unknown to the SAS men who had taken part in the mission, Hitler had given his now notorious order dictating that captured commandos should be executed rather than taken prisoner of war, even if they were wearing military uniform. One clue was a new photo discovered of men of the SAS War Crimes Investigation Team (SASWCIT) recovering the bodies from their shallow grave.Don Hay, 69-year-old nephew of Sgt Hay, told the Telegraph: “It’s quite horrific what happened really. The fact that they were captured in uniform and they thought when they went on that operation, if they were captured, they would be taken prisoner of war.”The site of the September 20 execution of another eight men, led by Lt James ‘Desmond’ Black of 2nd SAS, is also believed to have been found near Saint-Die.The author, who has published his roll of honour of all Second World War SAS casualties under the pen name Ex-Lance Corporal X, said: “The Germans made them strip then shot them on the edge of pre-dug pits one by one.“They then back-filled these pits, covering them over in an attempt to erase their crimes.“They buried the men’s personal effects elsewhere or burnt them. Inevitably, when tracked down those responsible all claimed to have been only the duty driver or only a sentry posted on the edge of the area.“Eventually the stories came out and many began to turn evidence against each other.”Profits from The SAS and LRDG Roll of Honour 1941-47 will go to Combat Stress and to fund more memorial headstones.