Courtesy of Jeffrey, I have this picture of a Saint at Mass.
Kneeling at the right is His Imperial and Royal Majesty the Emperor Charles, now Blessed Charles of Austria.
I posted some time ago a picture of an Australian Padre in New Guinea in WWII. A subtext to that post was the adaptability of the Extraordinary form of the Mass: that adaptability is shown here too, where Mass is celebrated in a railway siding, next to a hospital train.
But as worthy of note is the adaptability of an Emperor, who humbles himself in front of his Sovereign Lord.