Honestly, I think the third book was perfect. The author has a good grip on what war and PTSD does to people, and she really stuck with that. I see her characters in many of my friends who have done one too many tours in Iraq or Afghanistan.
Unfortunately, the series tends to be portrayed as a love story that takes place in a war. It would be better off portrayed as a war story that just happens to have a love triangle.
Siri types my posts for me.