Griffin Johnsen is an American YouTuber known for his channel, The Armchair Historian, where he discusses history topics like the Vietnam War and battle formations. The channel's production team developed the free-to-play videogame "Fire & Maneuver", set in the Victorian era, which was released in 2023, and is currently developing the videogame "Master of Command: Prussian Glory", set during the Seven Years' War.
Personal life.
Johnsen's grandfather fought in World War II.