A civil or criminal prosecution in a court of a State of the United
States against a member of the armed forces of the United States on account of
an act done under color of his office or status, or in respect to which he
claims any right, title, or authority under a law of the United States
respecting the armed forces thereof, or under the law of war, may at any time
before the trial or final hearing thereof be removed for trial into the
district court of the United States for the district where it is pending in the manner
prescribed by law, and it shall thereupon be entered on the docket of the
district court, which shall proceed as if the cause had been originally
commenced therein and shall have full power to hear and determine the cause.