Oil on canvas; 65.1 x 95.6 cm (25 5/8 x 37 5/8 in). Yale University Art Gallery, New Haven, CT.
According to Joseph J. Ellis (Revolutionary Summer: The Birth of American Independence, 2013):
Warren had bravely stood his ground at Bunker Hill until the redcoats overwhelmed his redoubt; he had been shot in the back of the head as he turned to escape, and then his dead body had been bayoneted by several British soldiers caught up in the heat of battle. The next day, an execution squad that was finishing of the American wounded made a point of decapitating Warren and displaying his head on a spit, thereby ensuring his martyrdom.