The Battle of San Romano was fought on 1 June 1432, in San Romano, some 30 miles outside Florence,[1] between the troops of Florence, commanded by Niccolò da Tolentino, and Siena, under Francesco Piccinino.

As the 1430s began Florence had found itself in conflict with the rival city state of Lucca, and her allies, Siena and Milan.

The clash, which lasted for some six or seven hours, consisted of a series of heavy cavalry fights.

It was decided by the intervention of a second cavalry corps commanded by Micheletto Attendolo.

Today the three panels are separated and located in galleries in London, Paris, and Florence: