The Advance-Guard, or The Military Sacrifice (The Ambush)

Frederic Sackrider Remington was an American painter, illustrator, sculptor, and writer who specialized in the genre of Western American Art. His works are known for depicting the Western United States in the last quarter of the 19th century and featuring such images as cowboys, Native Americans, and the US Cavalry.

The Advance-Guard, or The Military Sacrifice is an 1890 oil painting by Frederic Remington.