Claim: Émile Marie Laurent served in the military from October 25, 1875 to October 5, 1877, but failed to be appointed as the Prefect of Police of Paris.
Evidence: Emile Marie Laurent (October 1, 1852 - October 1930), was the Prefect of Police of Paris from September 1914 to June 1917. 
He was appointed as the Prefect of Police of Paris on September 2, 1914.