For 10 points, name this composer of Robert the Devil,  L'Africaine,  and The Huguenots.
In one of this man's historical operas, Armando exposes the Grand Vizier's machinations and saves the life of Sultan Aladino during the Sixth Crusade. He also wrote about Konrad switching clothes with Frederick the Great in the finest-ever operatic treatment of the Third Silesian War. This composer of The Crusade in Egypt and A Camp in Silesia also drew on historical incidents in a collaboration with Eugene Scribe that told of a dastardly (*) Norman duke; in an opera about the travels of Vasco da Gama; and in an opera that ends with the St. Bartholomew's Day Massacre. For 10 points, name this composer of Robert the Devil,  L'Africaine,  and The Huguenots.
In one of this man's historical operas, Armando exposes the Grand Vizier's machinations and saves the life of Sultan Aladino during the Sixth Crusade.
Giacomo Meyerbeer [or Jacob Liebmann Beer]