Michelangelo
With the completion of the "David" came another commission. In early 1504 Leonardo da Vinci had been commissioned to paint "The Battle of Anghiara" in the council chamber of the Palazzo Vecchio, depicting the battle between Florence and Milan in 1440. Michelangelo was then commissioned to paint the "Battle of Cascina". The two paintings are very different: Leonardo depicts soldiers fighting on horseback, while Michelangelo has soldiers being ambushed as they bathe in the river. Neither work was completed and both were lost forever when the chamber was refurbished. Both works were much admired, and copies remain of them, Leonardo's work having been copied by Rubens and Michelangelo's by Bastiano da Sangallo.
David (Donatello)
Donatello, then in his early twenties, was commissioned to carve a statue of David in 1408, to top one of the buttresses of Florence Cathedral, though it was never placed there. Nanni di Banco was commissioned to carve a marble statue of Isaiah, at the same scale, in the same year. One of the statues was lifted into place in 1409, but was found to be too small to be easily visible from the ground and was taken down; both statues then languished in the workshop of the "opera" for several years. In 1416, the Signoria of Florence commanded that the "David" be sent to their Palazzo della Signoria; evidently the young David was seen as an effective political symbol, as well as a religious hero. Donatello was asked to make some adjustments to the statue (perhaps to make him look less like a prophet), and a pedestal with an inscription was made for it: PRO PATRIA FORTITER DIMICANTIBUS ETIAM ADVERSUS TERRIBILISSIMOS HOSTES DII PRAESTANT AUXILIUM ("To those who fight bravely for the fatherland the gods lend aid even against the most terrible foes").