Can one write a book about war that doesn’t talk about weapons? Yes, and Grunt: The Curious Science of Humans at War proves it. Instead, the author talks about the labs in Natick, MA, that test fabric for uniforms (and gently makes fun of the specialists’ outstanding New England accent), how a wedding dress designer can get interested in mittens with one finger for snipers. Other topics are more challenging, showing how a different lab uses cadavers to test armored vehicles, how surgeons reconstruct penises lost to real bombs, and how doctors use maggots to clean wounds. A strong stomach is recommended! Still, there are plenty of humorous moments as when we learn that powered bug juice is a good tool to minimize toilet odors in submarines. Who knew?