The Incas had one of the most organized armies in South America. This army consisted of several large-scale battalions. The warriors wore tunics that often were of a checkered pattern. This was the army standard dress. Their weapons included slings, clubs, bronze knives and scythes. Their armour was made of gold which made it impractical for defense and was very costly. There could be as many as 100,000 men in the army at a time.