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Grunt: The Curious Science of Humans at War Illustrated Edition
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A New York Times / National Bestseller
"America's funniest science writer" (Washington Post) Mary Roach explores the science of keeping human beings intact, awake, sane, uninfected, and uninfested in the bizarre and extreme circumstances of war.
Grunt tackles the science behind some of a soldier's most challenging adversaries―panic, exhaustion, heat, noise―and introduces us to the scientists who seek to conquer them. Mary Roach dodges hostile fire with the U.S. Marine Corps Paintball Team as part of a study on hearing loss and survivability in combat. She visits the fashion design studio of U.S. Army Natick Labs and learns why a zipper is a problem for a sniper. She visits a repurposed movie studio where amputee actors help prepare Marine Corps medics for the shock and gore of combat wounds. At Camp Lemmonier, Djibouti, in east Africa, we learn how diarrhea can be a threat to national security. Roach samples caffeinated meat, sniffs an archival sample of a World War II stink bomb, and stays up all night with the crew tending the missiles on the nuclear submarine USS Tennessee. She answers questions not found in any other book on the military: Why is DARPA interested in ducks? How is a wedding gown like a bomb suit? Why are shrimp more dangerous to sailors than sharks? Take a tour of duty with Roach, and you’ll never see our nation’s defenders in the same way again.
15 illustrations- ISBN-100393245446
- ISBN-13978-0393245448
- EditionIllustrated
- PublisherW. W. Norton & Company
- Publication dateJune 7, 2016
- LanguageEnglish
- Dimensions6 x 1.1 x 8.6 inches
- Print length288 pages
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― Washington Post
"From the ever-illuminating author of Bonk and Stiff comes an examination of the science behind war. Even the tiniest minutiae count on the battlefield, and Roach leads us through her discoveries in her inimitable style."
― Elle
"Our most consistently entertaining science journalist…Roach goes where other writers wouldn’t dare….And her search produces images―a kind of technopoetry―that are hard to forget."
― O Magazine
"[Roach] takes on the challenges the military faces to keep its fighters safe and healthy with her trademark flair (and zingy footnotes)."
― Entertainment Weekly
"Roach is a tenacious investigative journalist with an appetite for the unappetizing...Grunt ranks high in the Roach repertoire."
― USA Today
"Mary Roach’s latest bit of brilliance….As meticulously researched, beautifully written, and disturbingly funny as her previous books…Grunt examines the science behind war, as well as the researchers who are leading the charge in these state-of- the-art developments. Roach’s prose is a triumph―an engaging blend of anecdote, research, and reflection."
― Boston Globe
"[Roach] writes exquisitely about the excruciating….wildly informative and vividly written"
― Los Angeles Times
"Nobody does weird science quite like [Roach], and this time, she takes on war. Though all her books look at the human body in extreme situations (sex! space! death!), this isn’t simply a blood-drenched affair. Instead, Roach looks at the unexpected things that take place behind the scenes."
― Wired
"Roach...applies her tenacious reporting and quirky point of view to efforts by scientists to conquer some of the soldier’s worst enemies."
― Seattle Times
"Extremely likable…and quick with a quip….[Roach’s] skill is to draw out the good humor and honesty of both the subjects and practitioners of these white arts among the dark arts of war."
― San Francisco Chronicle
"Covering these topics and more, Roach has done a fascinating job of portraying unexpected, creative sides of military science."
― New York Post
About the Author
Product details
- Publisher : W. W. Norton & Company; Illustrated edition (June 7, 2016)
- Language : English
- Hardcover : 288 pages
- ISBN-10 : 0393245446
- ISBN-13 : 978-0393245448
- Item Weight : 1 pounds
- Dimensions : 6 x 1.1 x 8.6 inches
- Best Sellers Rank: #785,780 in Books (See Top 100 in Books)
- #284 in Scientific Research
- #863 in Anatomy (Books)
- #6,517 in American Military History
- Customer Reviews:
About the author

Mary Roach is the author of Grunt: The Curious Science of Humans at War, Packing for Mars: The Curious Science of Life in the Void, Bonk: The Curious Coupling of Science and Sex, Spook: Science Tackles the Afterlife, and Stiff: The Curious Lives of Human Cadavers. Her writing has appeared in Outside, Wired, National Geographic, and the New York Times Magazine, among others. She lives in Oakland, California.
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Learn more how customers reviews work on AmazonCustomers say
Customers find this book fascinating and thoroughly researched, with a super easy-to-follow writing style that keeps the tone lighthearted throughout. Moreover, they appreciate its engaging detail and unique perspective on military science, with one customer noting how it captures the scientific perspective beautifully. Additionally, the book receives positive feedback for its heartwarming approach, with one review highlighting its riveting descriptions of war trauma. However, the pacing receives mixed reactions, with several customers noting that it feels like it abruptly ends.
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Customers find the book engaging and fascinating, with multiple chapters receiving positive feedback.
"...the USN in the aviation field, this book was both informative and interesting. Topics such as hearing as well as heat and diarrhea are covered...." Read more
"...The author tells that story in a fun and interesting way...." Read more
"...if you're ever in Oregon, I'd like to buy you a beer for such a good read and the respectful manner you portrayed my brothers and sisters in arms...." Read more
"A magical mystery tour through the labyrinth of human beings subjected to the bizarre conditions of combat. Not for the faint of heart." Read more
Customers find the book uniquely informative, thoroughly researched, and full of facts, with one customer describing it as extremely interesting investigative journalism about science and the military.
"...twenty years in the USN in the aviation field, this book was both informative and interesting...." Read more
"This is a very unique war book. There won't be any book quite like it. The book isn't the usual X and Os description of a battle...." Read more
"...It illustrates in beautiful, tragic, humor, the oddities of the science at work in the military...." Read more
"...She brings her standard approach of tireless and detailed analysis of how science and technology is applied to critical elements of our lives."" Read more
Customers enjoy the book's humor, laughing out loud on every page and appreciating its lighthearted tone.
"...The author has interspersed healthy doses of humor in this book. One thing that made me laugh out loud was the chapter on combat medic training...." Read more
"...The author tells that story in a fun and interesting way...." Read more
"...It illustrates in beautiful, tragic, humor, the oddities of the science at work in the military...." Read more
"...warmer approach to the people she is writing about; while still keeping her humor...." Read more
Customers appreciate the writing style of the book, finding it compelling and easy to follow, with one customer noting it reads like a travelogue of military research establishments.
"...Her method of telling the story will keep your attention and I think teach a little something to anyone...." Read more
"...I have read nearly all of her books; her writing is addictive (in a good way)." Read more
"...With her breezy style of writing, Grunt is in the same vein as her other work...." Read more
"...really highlight’s Roach’s strength: her ability to immerse the reader in an unfamiliar world, and to explore an unfamiliar lifestyle...." Read more
Customers appreciate the style of the book, finding it fascinating and offering a unique view of our world.
"...This book doesn't shy away from that crazy machine. It illustrates in beautiful, tragic, humor, the oddities of the science at work in the military...." Read more
"...She creates herself as an endearing dork, and, honestly, I love it, because her curious dorkitude is something her fans relate to, almost..." Read more
"...Often heady stuff presented in a light-hearted fashion and as always, with a good accompaniment of wit...." Read more
"I love Mary Roach and her unique view of our world. She is a very intense researcher...." Read more
Customers appreciate the depth of the book, with its engaging and bizarre details, and one customer notes how it covers a variety of topics.
"...Her chapters cover a variety of topics, from the difficulties of finding appropriate camouflage and uniforms that protect the soldiers that are both..." Read more
"...The book is a fascinating look into the back room operations of the military...." Read more
"...able to hone her incredible talent for research and gain an impressive amount of access into a very closed-off world...." Read more
"...We learn about sanitation and about gear, and what can happen when both of these things break down...." Read more
Customers find the book heartwarming, with one customer noting how it adds levity to a sad topic, while others appreciate how it assigns more respect to our military.
"...The book focuses on not the immediate support but the strategic support...." Read more
"...It illustrates in beautiful, tragic, humor, the oddities of the science at work in the military...." Read more
"...I love her other books that she wrote but this one was more poignant. Highly recommended. And it is NOT all hoorah!..." Read more
"...Roach’s decision to focus on life-saving military technology (as opposed to weapons) plays to this strength...." Read more
Customers have mixed opinions about the pacing of the book, with several noting that it feels rushed and abruptly ends, while one customer mentions that some chapters drag a bit.
"...This isn't her best, some chapters drag a bit, and it is slightly off the keen editing normal for her other books, but definitely worth reading and..." Read more
"...Introspection... It was funny and poignant, but I'm still reeling from the last chapter...." Read more
"Roach grasps scientific journalism with wit, joy and aplomb. This read is no different in quality to her best works" Read more
"...This, like several of her books, starts a little slowly but soon enough captivates the reader with all those fun facts you've always wondered about..." Read more
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- Reviewed in the United States on June 12, 2016Having spent over twenty years in the USN in the aviation field, this book was both informative and interesting. Topics such as hearing as well as heat and diarrhea are covered. Shark repellant, flies, genital transplants and safety all have their own chapters and these are just a few of the topics.
The submarine base in Groton, CT, caught my attention as well. The 'Wet Trainer' enables submariners the ability to increase their knowledge of how to save the 'ship'. Fascinating to learn that old methods such as a pine plug cone could be effective in an extreme leak. Also, the USS Tang (1944) and the USS Squalus (1939) incidents were well detailed. I remember the USS Thresher in 1963 but was not familiar with the first two incidents.
The author has interspersed healthy doses of humor in this book. One thing that made me laugh out loud was the chapter on combat medic training. The author found some file drawers labeled 'spleens', 'aortas' and other body parts. She was on her way to the bathroom and when she saw 'head' it was a moment of interest! Another chuckle for me was in the discussion of the contents of the MRE packets. The USN has baby wipes in their packs for toilet purposes and the USMC uses a piece of their tee shirt! Think that none of us could disagree with that statement!
There are so many facts that relate to the manner in which the military is forced to operate that it makes one shake their head. And, sometimes in disbelief at the specifications that the military uses in production of an item.
The chapter that covered safety also brought back memories of my days in the USN on the end of many runways. In the morning our first duty at 0800 was FOD (Foreign Object Damage) walk down. In formation, we walked looking for any object that could cause damage to the engine of an aircraft. And, yes bird strikes were not common but I remember several aircraft engines being damaged by them during my 20 + years.
Of particular interest to the warriors returning from Iraq and Afghanistan are the two chapters devoted to genital transplants and injuries below the belt. The author states that there are '300 genito-urological injuries for 18,000 limb amputees'. Finally, some progress is being made in this area for the men affected by this type of injury.
Lots of unknown facts concerning the manner in which the 'powers to be' make decisions on important military items.
Most highly recommended.
- Reviewed in the United States on November 14, 2016This is a very unique war book. There won't be any book quite like it. The book isn't the usual X and Os description of a battle. It is the story of the network and that science behind the military member in the field, air, land and sea.
Armies are very complicated things. I think the ratio of support to any infantry man in the field is like 12 or more to 1. Those 12 do a very wide range of tasks. Most people wouldn't understand that but this book helps you. The book focuses on not the immediate support but the strategic support. That is the process to help people in the field or make better devices to help that person in the field. The book dives a little into the process or science involved to help design those things. The book tells that story in a series of stories. She covers things like how ear pieces are developed, the use of maggots in wound care, The development of shark replant, and how to sleep in a world with no light (subs). That is just a few of the inside stories. The author tells that story in a fun and interesting way. Her method of telling the story will keep your attention and I think teach a little something to anyone. The reader will get a small understanding that life in the military is complicated. It requires scores of people to support that guy in the field.
- Reviewed in the United States on July 16, 2020This was a great book. Seriously.
I've got 25 years military, nine deployments, in both the Marine Corps and the Army National Guard. I've worked as an avionics technician on jet aircraft, and also been a platoon sergeant in an infantry unit. I'm no special forces, am definitely middle speed and semi-drag (if you're military, you understand), but, like I said, I've got a lot of experience in the military and the crazy machine that it is.
This book doesn't shy away from that crazy machine. It illustrates in beautiful, tragic, humor, the oddities of the science at work in the military. Our culture and way of doing things is often our own worse enemy. We fight our own plans and circumstances more than we ever fight the enemy.
Yet this book isn't about attacking the military at all. No, don't misunderstand me. I felt loved, reading this book. It looked at things, many of which in this book I can relate to directly, and showed it to me as one might show a sibling a funny photograph they took of a slightly embarrassing moment, but only to highlight the thing itself and also how much the sibling is loved.
If you're someone who works with anyone in the military and would like an inkling into their experiences and mindset, but would rather skip the politics and such, then this book is for you. Though, warning, the last chapter, which is very short, tore at my heart. If you're in the military, especially a leader, you should read this book and know that your asinine scheduling of a training exercise is just plain dumb and doesn't do anything but make people hate you.
Wonderful book. And to the author, if you're ever in Oregon, I'd like to buy you a beer for such a good read and the respectful manner you portrayed my brothers and sisters in arms. I was able to laughed at myself in these pages, and yet paused to wonder if I could perhaps do a little bit better job.
- Reviewed in the United States on January 25, 2025A magical mystery tour through the labyrinth of human beings subjected to the bizarre conditions of combat. Not for the faint of heart.
Top reviews from other countries
Brian R. MartinReviewed in the United Kingdom on October 4, 20165.0 out of 5 stars Medical science and modern warfare.
Mary Roach is a successful author in the arcane field of bizarre facts about the human body. For example, in ‘Stiff’ she examined in detail what happens to a body after death. Her books are characterised by detailed research, including close-up observation ‘in the field’, combined with a quirky humour, that you either love or find rather irritating. Although there are occasions where it is a little too much, in general I appreciate the humour, which lightens the narratives of often disturbing topics. This is particularly true of the present book where she examines the role of medical science in war. The investigation is largely about the American experience, although there are examples from other countries and wars. America has a unique range of military-funded institutes devoted to some aspect of the medical-military interaction, and I was impressed by the willingness of just about everyone she encounters to make her welcome, and to explain what they are doing and why. This ranged from those working on classified projects, to sailors in the cramped conditions on board a nuclear submarine. It is hard to imagine such openness in other countries.
Some of the institutes are developing new medical and surgical techniques to treat seriously wounded soldiers, who in former times would be considered hopeless cases, such as those with major trauma injuries caused by the infamous IEDs in the Iraq wars. So we learn for example about progress in penis reconstruction and genital implants. But there is also information about research into more mundane conditions such as sleep deprivation, heat exhaustion and diarrhoea. The latter historically has decimated armies, and even today is a major problem where fresh water is not available. One institute teaches submariners how to escape safely if their ship is disabled at great depths (counter intuitively, holding your breath when ascending means certain death); another trains military medics to overcome a host of problems when treating the wounded while under fire. While the range of topics being studied is vast and most of obvious use, some initially sound bizarre, such as the experiments to find out what food bears like to eat, whether sharks really are attracted to human flesh (it turns out that if you are shipwrecked in seas inhabited by sharks, they are well down your list of worries) and the extraordinary ‘chicken gun’ that fires dead chickens at over 400mph at jet planes to test their ability to survive bird strikes.
One of the most moving parts of the book is the chapter devoted to autopsies of dead servicemen, who are brought to the autopsy room just as they died, including any equipment attached to them as part of the attempts to keep them alive. The point here is to learn not just how they died in battle in order develop better defences to protect them, but also to examine the adequacy of medical procedures after they were wounded. What other country has the will and resources to be so thorough?
Mary Roach has done a considerable service by producing this short and informative book on a subject that many of us are ignorant about, and even are content with that. She has done this in a way that is readable and reminds us that conflicts have consequences long after hostilities have ceased.
Dr. Tim ParkerReviewed in Canada on July 13, 20165.0 out of 5 stars A unique look at military science and how it intersects with our daily lives. Fantastic read.
Mary Roach has made a reputation writing books on, well, let's say diverse (weird!) subjects. I have read all her previous books, and this continues in much the same vein, looking at a subject most people won't even think twice about. In this case, it's a look at the efforts that are undertaken to help protect our military (and associated professions like police) safe and healthy. Sounds pretty simple, huh? Nothing is simple in Mary Roach's world.
This book roves all over, but in a good way. She's looking at how boredom is an issue and how to treat it. She looks at the issues of diarrhea and how it can be debilitating. She looks at why snipers have issues with zippers on their clothes. She looks at the world of prosthetics and how it's handled. And many, many more subjects.
Throughout the book, Roach's writing style is engaging, interesting, and fun. This is a fun book to read, even if the subjects are sometimes a bit off-putting. There's humour, as well as fear, dealt with equally well. You can't help but feel squeamish at times, and you'll laugh at others. The book is a journey in and of itself, and it's a fascinating, fun journey to take. By the time you have finished the book, you'll have been on one heck of a journey, and learned a lot. And perhaps, have a different take on the military. Loved the book!
PankajReviewed in India on December 11, 20165.0 out of 5 stars amazing facts and funny writing
Just to know what goes behind the soldiers survival...amazing facts and funny writing style
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OUELLET, RaymondReviewed in France on January 19, 20185.0 out of 5 stars Grunt
Ce livre de Mary Roach était excellent, amusant, et répondait à toutes mes attentes. Elle est un auteur que j'aime énormément merci.
Thomas HammerleReviewed in Australia on November 5, 20165.0 out of 5 stars Awesome as always, packed with great information
Mary Roach always takes us on fascinating journeys into little known worlds and pulls the curtain away from stages which normally remain obscured. On the way she not only explains many mysteries we didn't even think to wonder about, in this case of the supporting cast of the business of war, but adds to our knowledge in many everyday useful ways. I for one won't be worrying about sharks anymore when swimming in the ocean!










