David Green is a graduate in applied science with master's degrees in business administration and military history. The author of numerous articles on World War II and a keen photographer, his interest in Japanese castles began while he was teaching at a Japanese senior high school. He is married to Jennifer Mitchelhill and lives in Melbourne, Australia. Jennifer Mitchelhill is a marketing graduate who started her own business in design before commencing further studies in architectural history. While teaching English at a Japanese senior high school she undertook a research project on