There's going to be spoilers in this post. ===
This was my first exposure to Hemingway and it was a fantastic read. I thought it was a brilliant way to show the many brutalities of war: the degradation of Rinaldi, the shooting of the Sergeant, the rounding up of officers and really all of the retreat scene in the book was incredible poignant. I think the latter did a good job at a brief exploration of moral relativism and the idea of self vs. duty, which is constantly explored by Frederic. I think the most brilliant part of this book might have been the way that Hemingway handled removing Frederic and Catherine from the brutality of war, and then introducing them to a more personal and possibly worse form of brutality. The ending astounded me, even the very last page left me thinking "is there any escape?", which is probably exactly what he wanted. Great book. Not as good as the last book I read but still great nonetheless.