Thanks for the amazing video.
My first thoughts were, at 2:17 when he's briefing his Sqn, how many were putting on a brave face for the camera? As it must have been petrifying and a real test of nerve to be a ww1 pilot.
From what I've read only the Germans experimented with parachutes in 1918 and even then they didn't have a good success rate. I believe Ernst Udet, the highest scoring German fighter pilot to survive that war, the second-highest scoring after Manfred von Richthofen and later WW2 Luftwaffe General, had a lucky escape using a parachute. Ernst Udet has an interesting life story on Wikipedia!
At the end of the video, the Royal Flying Corps (looking at the pips on his sleeves) Prisoner of War must have felt lucky, it could have been worse.