Sometimes it's just too easy.
He is entitled to his opinion, but he is still partisan.
Are you so certain? Sure he, he donated to Kerry... but is that really surprising considering his opionions on Iraq. I would be more curious to know his past political leanings before passing judgment on his partisan leanings.
Sad but true, but their are plenty of people in the military that share his opinion, and not all of them are Democrats.