Passage: In July 1897 Dreyfus' family contacted the President of the Senate Auguste Scheurer-Kestner to draw attention to the tenuousness of the evidence against Dreyfus. Scheurer-Kestner reported three months later that he was convinced Dreyfus was innocent, and persuaded Georges Clemenceau a newspaper reporter and former member of the Chamber of Deputies. In the same month, Mathieu Dreyfus made a complaint about Esterhazy to the Ministry of War. In January 1898 two events raised the case to national prominence: Esterhazy was acquitted of treason charges (subsequently shaving his moustache and fleeing France), and Émile Zola published his "J'accuse...!" a Dreyfusard declaration that rallied many intellectuals to Dreyfus' cause. France became increasingly divided over the case, and the issue continued to be hotly debated until the end of the century. Antisemitic riots erupted in more than twenty French cities and there were several deaths in Algiers.

Question: Who did Dreyfus make his complaint to?
Ministry of War