Matt Best is a former U.S. Army Ranger and entrepreneur known for his work in the military and social media. He gained popularity through his YouTube channel, where he shares content related to military life, fitness, and personal experiences. Best is also a co-founder of Article 15 Clothing, a brand that supports veterans and first responders. In addition to his online presence, Matt Best is an author and has released a book titled "Thank You for My Service." He is recognized for his efforts to raise awareness about veteran issues and promote a positive image of military service through humor and storytelling.