Military and naval affairs

By 1303, crossbow practice had become compulsory in the city, with citizens training in groups. As weapons became more expensive and complex to operate, professional soldiers were assigned to help work merchant sailing ships and as rowers in galleys. The company of "Noble Bowmen" was recruited in the later 14th century from among the younger aristocracy and served aboard both war-galleys and as armed merchantmen, with the privilege of sharing the captain's cabin.

Though Venice was famous for its navy, its army was equally effective. In the 13th century, most Italian city states already were hiring mercenaries, but Venetian troops were still recruited from the lagoon, plus feudal levies from Dalmatia (the very famous Schiavoni or Oltremarini) and Istria. In times of emergency, all males between seventeen and sixty years were registered and their weapons were surveyed, with those called to actually fight being organized into companies of twelve. The register of 1338 estimated that 30,000 Venetian men were capable of bearing arms; many of these were skilled crossbowmen. As in other Italian cities, aristocrats and other wealthy men were cavalrymen while the city's conscripts fought as infantry.

By 1450, more than 3,000 Venetian merchant ships were in operation. Most of these could be converted when necessary into either warships or transports. The government required each merchant ship to carry a specified number of weapons (mostly crossbows and javelins) and armour; merchant passengers were also expected to be armed and to fight when necessary. A reserve of some 25 (later 100) war-galleys was maintained in the Arsenal. Galley slaves did not exist in medieval Venice, the oarsmen coming from the city itself or from its possessions, especially Dalmatia. Those from the city were chosen by lot from each parish, their families being supported by the remainder of the parish while the rowers were away. Debtors generally worked off their obligations rowing the galleys. Rowing skills were encouraged through races and regattas.

Early in the 15th century, as new mainland territories were expanded, the first standing army was organized, consisting of condottieri on contract. In its alliance with Florence in 1426, Venice agreed to supply 8,000 cavalry and 3,000 infantry in time of war, and 3,000 and 1,000 in peacetime. Later in that century, uniforms were adopted that featured red-and-white stripes, and a system of honors and pensions developed. Throughout the 15th century, Venetian land forces were almost always on the offensive and were regarded as the most effective in Italy, largely because of the tradition of all classes carrying arms in defense of the city and official encouragement of general military training.

The command structure in the army was different from that of the fleet. By ancient law, no nobleman could command more than twenty-five men (to prevent the possibility of sedition by private armies), and while the position of Captain General was introduced in the mid-14th century, he still had to answer to a civilian panel of twenty Savi or "wise men". Not only was efficiency not degraded, this policy saved Venice from the military takeovers that other Italian city states so often experienced. A civilian commissioner (not unlike a commissar) accompanied each army to keep an eye on things, especially the mercenaries. The Venetian military tradition also was notably cautious; they were more interested in achieving success with a minimum expense of lives and money than in the pursuit of glory.