FTP identify this Secretary of War who claimed that his dismissal by Johnson violated the Tenure of Office Act.
One of this man's appointees was demoted to serve under this man's assistant Charles Dan after the successful capture of Belle Boyd.  This man was appointed to handle California land-title claims by Jeremiah Black, whom he would later succeed as Attorney General. In his most famous position, this man fought with the U.S. Sanitary Commission and delivered a stern rebuke following a surrender at Bennett Place. The appointment of Simon Cameron as Minister to Russia created an opening that led to his taking the vacated position, one that he refused to relinquish despite attempts to replace him by Lorenzo Thomas and U.S. Grant, who as President would appoint him to serve on the Supreme Court.  FTP identify this Secretary of War who claimed that his dismissal by Johnson violated the Tenure of Office Act.
One of this man's appointees was demoted to serve under this man's assistant Charles Dan after the successful capture of Belle Boyd.  
Edwin McMasters Stanton