You should watch the video
(from C-SPAN). You should specifically hear what he says at about 24:01. Anyone who remembers the first Iraq war (or has seen "Jarhead") will remember that there was a long wait before the war actually began. Murtha reminds us that people like him were telling George H.W. Bush they needed to get the war going, but Bush and his administration said they would wait until they had a proper coalition.
But he listened to us, he had a meeting every week and listened to what we had to say. And sometimes he took the advice, sometimes he didn't. This outfit doesn't want to hear any suggestions. It's frustrating. And the troops are paying the price for it.
You should take the time to at least watch the entire Q&A session.