Reading on the American Bar Association website, I'd say the answer to your question is "Yes, a pardon can be issued for a conviction in a Military Tribunal". Mainly because it would be a federal case, the military is part of the federal government, and the President can grant a pardon in federal cases, but not in state cases.
Fraud vitiates everything, even in a military tribunal. Whether civil or military, if the election was stolen or treason was proven, then the perps heads will roll.
Reading on the American Bar Association website, I'd say the answer to your question is "Yes, a pardon can be issued for a conviction in a Military Tribunal". Mainly because it would be a federal case, the military is part of the federal government, and the President can grant a pardon in federal cases, but not in state cases.
Even if treason was proven? Stolen election?
Fraud vitiates everything, even in a military tribunal. Whether civil or military, if the election was stolen or treason was proven, then the perps heads will roll.