To avoid treason charges, this man fled to Brussels, where he committed suicide at the grave of his mistress.  
This man expelled his former superior, the Duke of Aumale, from the army. Charles Floquet defeated this man in a duel. His lack of religiosity was a reason for his appointment to Minister of War in the cabinet of Charles Freycinet. Paul Deroulede's League of Patriots supported this man. This man's rise to prominence started with him earning 100,000 votes in a department election that he was not even a candidate in. To avoid treason charges, this man fled to Brussels, where he committed suicide at the grave of his mistress.  He was known as "General Revanche" for his focus on avenging France's loss in the Franco-Prussian War. For 10 points, name this nationalist French general whose supporters nearly overthrew the Third Republic in 1889 in his namesake affair.
This man expelled his former superior, the Duke of Aumale, from the army.
Georges Boulanger