{"schema_version":"bf_book_companion_v1","release_id":"20260417T232332Z","book":{"amazon_purchase_url":"https://www.amazon.com/dp/059352165X?tag=bookfrontier-20","asin":"059352165X","authors":["Nico Medina","Who HQ","Dede Putra"],"book_id":"9780593521656","canonical_url":"https://bookfrontier.com/books/what-was-world-war-i-059352165X","cover_image_url":"https://img.bookfrontier.com/9780593521656.jpg?v=20260417T232332Z%3A2026-04-17T23%3A23%3A32Z","description":"This compelling addition to the What Was? series covers what was supposed to be “the war to end all wars” but tragically wasn't. In 1914, the assassination of an Austrian archduke set off a disastrous four-year-long conflict involving dozens of countries with battles taking place in all parts of the world. World War I was the first to use planes and tanks as well as deadly gases that left soldiers blinded or “shell shocked” (a condition now called Post Traumatic Stress Syndrome). There were battles that lasted for months with opposing troops fighting from rat-infested trenches, battles that often ended in a hollow victory with only a small area of land retaken. The author of many successful Who HQ titles Nico Medina gives young readers a clear and compelling account of this long and tragic event, a war that left over 20 million dead and was the lead-up to World War II barely twenty years later.","forthcoming":false,"isbn13":"9780593521656","publication_date":"20230606","publisher":"Penguin Young Readers Group","slug":"what-was-world-war-i","subtitle":"","title":"What Was World War I?"},"discovery":{"categories":{"all":[{"bisac_code":"HIS027090","confidence_band":"medium","label":"World War I History","score":0.7879,"source":"bisac_hint_model"},{"bisac_code":"JNF025130","confidence_band":"medium","label":"Military & Wars","score":0.7773,"source":"bisac_hint_model"},{"bisac_code":"HIS027370","confidence_band":"medium","label":"World War II: European Theater","score":0.7553,"source":"bisac_hint_model"}],"hint":[{"bisac_code":"HIS027090","confidence_band":"medium","label":"World War I History","score":0.7879,"source":"bisac_hint_model"},{"bisac_code":"JNF025130","confidence_band":"medium","label":"Military & Wars","score":0.7773,"source":"bisac_hint_model"},{"bisac_code":"HIS027370","confidence_band":"medium","label":"World War II: European Theater","score":0.7553,"source":"bisac_hint_model"}],"publisher":[{"bisac_code":"JNF025070","confidence_band":"high","label":"European History for Kids","score":1,"source":"onix_publisher_code"},{"bisac_code":"JNF025130","confidence_band":"high","label":"Military & Wars","score":1,"source":"onix_publisher_code"},{"bisac_code":"JNF043000","confidence_band":"high","label":"Civics & Government","score":1,"source":"onix_publisher_code"}]},"genres":[{"label":"World War I History","score":0.7879,"slug":"world-war-i-history"},{"label":"Military & Wars","score":0.7773,"slug":"military-wars"},{"label":"World War II: European Theater","score":0.7553,"slug":"world-war-ii-european-theater"}],"reader_fit":["Good for readers who enjoy World War I History","Good for fans of History","Good for readers who enjoy World War I History and Military & Wars."],"related_lists":[{"intro":"","slug":"shelf-his027090-world-war-i","title":"World War I Books","url":"https://bookfrontier.com/lists/shelf-his027090-world-war-i"}],"series":null,"similar_books":[{"authors":["Patricia Brennan Demuth","Who HQ","John Mantha","Tim Tomkinson"],"book_id":"9780448464626","cover_image_url":"https://img.bookfrontier.com/9780448464626.jpg?v=20260417T232332Z%3A2026-04-17T23%3A23%3A32Z","score":19.1895,"title":"What Was Pearl Harbor?","url":"https://bookfrontier.com/books/9780448464626"},{"authors":["Jess Brallier","Who HQ","Tim Foley"],"book_id":"9781524792657","cover_image_url":"https://img.bookfrontier.com/9781524792657.jpg?v=20260417T232332Z%3A2026-04-17T23%3A23%3A32Z","score":16.8021,"title":"What Was the Bombing of Hiroshima?","url":"https://bookfrontier.com/books/9781524792657"},{"authors":["Ernst Junger","Michael Hofmann","Ernst Jünger"],"book_id":"9780142437902","cover_image_url":"https://img.bookfrontier.com/9780142437902.jpg?v=20260417T232332Z%3A2026-04-17T23%3A23%3A32Z","score":15.9628,"title":"Storm of Steel","url":"https://bookfrontier.com/books/9780142437902"},{"authors":["Sampson J. 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