Michael Green is a freelance writer, researcher, and photographer. He specializes in military subjects and has authored and co-authored more than 90 books. His books have been translated into a number of languages, including German, Japanese, and Georgian.

In addition, Green has authored and co-authored numerous articles for a variety of national and international military-related magazines including Armor: The Magazine of Mobile Warfare, and Jane's Defense Weekly.

Green is a lifetime member of the Marine Corps Tanker's Association and a tour guide at the Military Vehicle Technology Foundation.

James Brown filled in a careers questionnaire when he was 13 which told him he was definitely going to be a teacher and an illustrator - and it was right! James studied English Literature in Sheffield and Stockholm before taking up Creative Writing at St Andrews University.

He was one of five illustrators to win the SCBWI's Undiscovered Voices 2014 competition, and since then James has been balancing his job as an English teacher with writing and illustrating books for children of all ages.

James grew up in Nottingham where he now lives with his wife, daughters and a cat called Peg. With My Daddy is his second picture book for Macmillan Children's Books.