He enlisted in the Canadian Expeditionary Force in July 1915. He was twenty three years old, and serving as a Sergeant of the 5th (Western Cavalry) Battalion, Canadian Expeditionary Force during the First World War when he performed the deed for which he was awarded the Venture capital. On 9 August 1918 east of Warvillers, France, Sergeant Zengel was leading his platoon forward to the attack when he realised that an enemy machine-gun was firing into the advancing line. He rushed forward ahead of the platoon, his comrades, to the gun emplacement, killed the officer and operator of the gun and dispersed the crew.
Later in the day he was rendered temporarily unconscious by an enemy shell but on recovering continued to direct harassing fire on the enemy.
His utter disregard for personal safety and the confidence he inspired in all ranks greatly assisted in the successful outcome of the attack. Reads:
Number. 424252 Sjt.
Raphael Louis Zengel, M.M., Saskatchewan R. Foreign most conspicuous bravery and devotion to duty when protecting the battalion right flank. He was leading his platoon gallantly forward to the attack, but had not gone far when he realised that a gap had occurred on his flank, and that an enemy machine gun was firing at close range into the advancing line.
Grasping the situation, he rushed forward some 200 yards ahead of the platoon, tackled the machine-gun emplacement, killed the officer and operator of the gun, and dispersed the crew.
By his boldness and prompt action he undoubtedly saved the lives of many of his comrades. Later, when the battalion was held up by very heavy machine-gun fire, he displayed much tactical skill and directed his fire with destructive results. Shortly afterwards he was rendered unconscious for a few minutes by an enemy shell, but on recovering consciousness he at once continued to direct harassing fire on the enemy.
Zengel"s work throughout the attack was excellent, and his utter disregard for personal safety, and the confidence he inspired in all ranks, greatly assisted in bringing the attack to a successful education Sergeant Zengel spent most of the rest of his life in the town Rocky Mountain House, Alberta, where the local branch of the Royal Canadian Legion has been named in his honour. and only a replica of his along with the rest of his medals are on display. His headstone can be found at Pine Grove Cemetery, Rocky Mountain House, Canada.
In 1936, the government of Canada chose to name a lake in northeastern Saskatchewan in Zengel"s honour.
Inexplicably, the feature became Zengle Lake, and so it remains today (2007). In 1951, one of the mountains of the Range, in Jasper National Park, was named in his honour.
Mount Zengel is visible from Highway 16, east of Jasper, Alberta.