Alfred Dreyfus (9 October 1859 – 12 July 1935) was a French Army officer commonly known for his central role in the Dreyfus affair. In 1894, Dreyfus fell victim to a judicial conspiracy that eventually sparked a major political crisis in the French Third Republic when he was wrongfully accused and convicted of being a German spy due to antisemitism. Dreyfus was arrested, cashiered from the French army and imprisoned on Devil's Island in French Guiana. Eventually, evidence emerged showing that Dreyfus was innocent and the true culprit was fellow officer Ferdinand Walsin Esterhazy. .
https://en.wikipedia.org/wiki/Alfred_Dreyfus