Streamline even further: "A WWII vet finds refuge from PTSD in his piano - until he meets a woman who shows him how to be happy."
My problem with it is that as a concept it sounds derivative (which isn't necessarily a bad thing) but yet terribly boring. The piano/war thing has been done in THE PIANIST - but there the stakes were so much higher, a Jew hiding from Nazis in the ruins of occupied Poland, who maintains his sanity by PRETENDING to play the piano... What are the stakes in this one? What does the veteran stand to lose? It seems like a drama-free second act - the veteran returns from the war, isn't happy, so he plays some piano (very nicely, presumably) and then a woman (who I imagine quite likes piano music) shows up and makes him happy. There's no physical goal in the construct, no dramatic question to be answered. With the title BATTLE CRY the audience is going to be sorely disappointed when nothing happens. For an hour and a half.
I'm with Nicholas - A recently returned WWII veteran struggles to overcome his PTSD in order to be with the woman he loves.? Now that at least sounds like a movie.
This logline stuff is hard, right? But a great way of testing the story concept.