The relatively poor Kingdom of Sardinia could not afford large numbers of cavalry, so a quick-moving infantry corps of marksmen were needed. These troops were trained to high physical and marksmanship standards. Like the French chasseurs à pied, a level of independence and initiative was encouraged so that they could operate in looser formations, in which direct command and control was not required. They fired individually and carried 60 rounds instead of the standard 40 rounds of traditional line infantry. The first uniform was black with brimmed hats, called "vaira". These were intended to defend the head from sabre blows.