Borgia Pope Alexander VII. Louis XII., King of France, and Ferdinand V. of Spain announced their adherence to this effort against the Turk, and Pierre D'Aubusson, the veteran Grand Master of the Knights of Saint John, was nominated as Captain-General of the Christian armies. For the purposes of this war the admiral of the Papal galleys in the Mediterranean, Lodovico del Mosca, purchased from Ferdinand, King of Naples, all his artillery, of which a description is given by the Padre Alberto Guglielmotti, a Dominican friar, author of a work entitled, "La Guerra dei Pirati e la Marina Pontifica dal 1500 al 1560 A.D." "There were thirty-six great bombards, with eighty carts pertaining to them; some drawn by horses, some drawn by buffaloes harnessed singly, or two, four, or even six together; two waggons laden with arquebuses for ships' boats; nine with about forty smaller bombards (bombardelles) placed three, four, or even six on each waggon; twelve with ordinary pieces of artillery; as many more for the service of twelve big guns; thirty-seven carts of iron balls; three with gunpowder; and finally five laden with nitre, darts, and bullets. Splendid artillery of most excellent workmanship and great power escorted by two thousand men under arms, without mentioning the companies who marched before and after each waggon."