The Death of Decius Mus by Simon de Vos (1641). 

Decius Mus was a general and consul of Rome who fought and died in the Battle of Sentinum in 295 BCE. The night before, he had a dream that told him Rome would only win the battle if one of the two consuls of Rome that were present died. When it looked life defeat was imminent, Decius charged his horse into enemy lines while his stunned men looked on. Although this led to his death, it inspired his troops who went on to win a resounding victory....