Thank you for your question today, I look forward to assisting you. I have nearly 20 years of legal experience in various disciplines, including JAG.
No, you do not. When you accept the Article 15 forum, that does two things.
First, it limits the amount of punishment that you can face. You would have been subject to much greater punishments had this been done at the court martial level.
Second, it limits the rights that you have. The right to appeals, the right to a judge, the rules of evidence and procedure, to a jury, to extended due process....those are all rights at court martial. You can have all of them, but you have to turn down the Article 15 when given the chance and demand trial by court martial.
Regrettably, when you accepted the forum of Article 15, you gave up all those rights. Your only appeal right is to the next level commander. There is no other appellate authority and no other option. There is no oversight over the choice of the battalion and brigade commanders. Their power, in a non-judicial action, is absolute. This is why we give soldiers the right to refuse Article 15's.
I'm sorry. I wish I could tell you differently here, but you gave up many rights when you accepted the Article 15 forum.