“George is at the fort; or, Life Among Soldiers" by Harry Castlemon is an exciting adventure book that tells the story of a boy named George who decided to join the army and serve in a fort full of dangers and challenges. The main theme of the book is friendship, courage and loyalty to the oath, which will test the strength of the hero. The author skillfully describes the life of soldiers, the realities of everyday life in the army and the military strategies of that time. This book will not only entertain you with its fascinating story, but also inspire courage and a sense of patriotism.