Prompt
Generate a realistic image of a mature British man in his later years, dressed in formal academic attire, possibly with a backdrop of a university or a library. He should be seated, with a book or a manuscript in his hand, and have a thoughtful expression on his face. Incorporate subtle hints of his military background, such as a medal or a badge on his lapel. The style should be dignified and respectful, reflecting his status as a renowned academic, military historian, and author.