During the First World War, the British War Dog School was set up. Find out how it trained dogs to carry messages along the trenches, helping the war effort and saving lives.

* Sapphire/Band 16 books offer longer reads to develop children's sustained engagement with texts and are more complex syntactically.

* Text type - An information book.

* The book is organised into short chapters to help children practise the skills of locating and identifying important information.

* The glossary and index can be used to develop children's information retrieval skills further.

* Curriculum links - History

This book is part of a book series called Collins Big Cat .

This book has been graded for interest at 9-10 years. This book is part of a reading scheme, meaning that it is a book aimed at children who are learning to read. This reading book uses the phonics method. This approach concentrates on teaching children how to map between sounds and spellings, allowing them to decode written words into their constituent sounds. Phonics skill thus involves being able to split the written word 'cat' into the phonemes /k/, /a/, /t/, and to map from letter 'c' to phoneme /k/, from letter 'a' to phoneme /ae/ and from letter 't' to phoneme /t/. Decoding skill is useful when reading unfamiliar words which use regular spelling sequences.

There are 56 pages in this book. This book was published 2017 by HarperCollins Publishers .

Writer and historian David Long is the author of the acclaimed Animals' VC: For Gallantry and Devotion and more than twenty other books. Jet the Rescue Dog is his first for younger readers. David is currently working on a second non-fiction book for children, The Man Who Sucked Blood From a Shark. Collins UK has been publishing educational and informative books for almost 200 years.