The Advance-Guard, or The Military Sacrifice

The Advance-Guard, or The Military Sacrifice (The Ambush) is an 1890 oil painting by Frederic Remington.
Description.
The painting depicts a cavalry scout slumping over his horse after being shot by an unseen Sioux warrior in ambush. Behind the scout are other mounted troops who are fleeing the ambush.
Provenance.
In an auction led by Thomas Ellis Kirby at the American Art Association, the painting was sold to E. H. Wales for US$250. The painting was acquired by the George F. Harding Museum sometime before 1982. In 1892, ownership of the painting was transferred to the Art Institute of Chicago.