Anything less than an execution would be injustice.

[Dancing Fire]

http://www.cnn.com/2017/10/23/politics/bowe-bergdahl-sentencing/index.html

 

[MollyMalone]

Bergdahl does not stand convicted of treason; indeed, he wasn't even charged with treason. As noted in the article you linked, Bergdahl was charged with, and pleaded guilty to, desertion & "misbehavior before the enemy." Neither of these Military Justice Code offenses is punishable by death.

This 2016 Newsweek article, What the Army Doesn't Want You to Know about Bowe Bergdahl, reflects actual investigative journalism, not the facile sound-bites that our President adores:
http://www.newsweek.com/2016/02/05/serial-bowe-bergdahl-mystery-pow-419962.html