How to phrase it?

Relaxed? Tranquil? Careless? Casual? What is the right word to describe how Vonnegut writes about war? It amazes me his writing technique, it is so calm and easy. It's fluent and informs in  a different way, it provides a different perspective of war to the reader.  

This book, especially through chapter 3 has caught my undivided attention. It utterly amazes me how Billy Pilgrim acts in reaction to his experiences in war. This text leaves the reader with a lot to bear in mind providing him with plenty of material to think thoroughly. Through out the text Vonnegut casually ends ideas and paragraphs with the line "So it goes." This adds a certain tone of causality to the book. The chapter is rather emphasized on the war experiences Billy had during WWII. The grotesque images that pop into the readers mind are just horrid. The causalities of war aren't a topic one talks fluently or rather in a relaxed and careless tone. However, this is exactly what Vonnegut does through the text as he describes the crude events of wartime. By using this phrase, so it goes, it is implied that the deaths of a dozens of people during this time was normal, something we saw everyday. It adds a certain relaxed tone to the text, which is a unique way of showing that war isn't as an easy topic to write about, even if what you're trying to say is against it.