Not acording to the Constitution.
Every soldier who served the so-called CSA could have been hung under US law.
As you know, President Lincoln, on the last day of his life refused to allow the treason trials for rebels in leadership positions suggested by Secretary of War Stanton.
Walt
Wrong. No matter how many times you post this lie, it is still a lie. According to the revalent US Code the charge of treason only applies to persons owing allegiance to the US. The confederacy seceded and formed a soveregn, foreign country.