The military of Patton, McArthur, Eisenhower, Marshall, Bradley and Nimitz would have convicted Manning for treason and taken him out to the firing squad.Ever hear of "
George John Dasch and the Nazi Saboteurs"?
Eight Nazis were captured in the US (1942), convicted of sabotage (although they hadn't even had time to do anything), and just
weeks later six were executed.
Manning deserved no less and should have received death by hanging - in public.