Surely, there are volumes of books to read on this Emperor Charles I, http://members.fortunecity.se/mikaelxii/ww1/Austria/charles.html ; let alone the history of WW I, to properly understand the subject being discussed.
The comment by Truth666 seems to involve this excerpt from the story:
"But his beatification has caused controversy in Austria, where Charles I is remembered for authorising the use of mustard gas during World War I and where critics believe his elevation to be politically driven by the conservative right."
Maybe the paragraph should be broken into two sentences.
I would wager, his elevation is driven more by the church, rather than the conservative right.
I forget all of my Saints now, I believe there may have been a Priest from Hungary that helped out many oppressed in World War II.
This is a very interesting article because everyone knows a lot about the history of WW II, but not of "the war to end all wars" except for the slight spillover in relations to recent Balkans conflicts.