via giocodelpontepisa.it:

“The Battle on the Bridge comes alive with two armies dressed in elaborate and shimmering sixteenth century Spanish costumes. It is divided into five phases: the march of the troops along the Lungarni until their arrival in their respective bases, the formal opening of the battle by the Anziano Rettore, the “call to arms” by the troops, the challenges made by ambassadors on horseback, and finally, the battle itself, as the various magistrature compete under the strategic command of their respective leaders. “