Over 16 million animals served in the First World War – they were a crucial part of the war effort. Many were kept as mascots to improve morale and for carrying supplies and messages to men at the front. This wall calendar brings together some of the best photographs from the IWM collections of the animals that served, featuring dogs, cats, a cockatoo and even a camel. Flame Tree: The Art of Fine Gifts. Flame Tree Publishing has produced calendars and diaries for over twenty years. Now the UK’s premier art calendar producer, we work in the global market online and in retail. Each year we spend many hours creating new designs with artists, photographers, licensors, museums and galleries to bring beautiful art into the homes and offices of our customers around the world.