Dungeons and Dragons has had a long history, but it's longer than many veteran players might realize. It is true that D&D saw its first release in 1974, but D&D's roots stretch further back—not just to 1971's Chainmail, but all the way back to 1812. The path from then to the modern day has spanned over two centuries, but even now, traces of D&D's ancestry are still visible even in 5th Edition.
Source：https://www.cbr.com/dnd-historical-wargame-roots/
