Yo mate, you should add the most fearsome tribe of all America. The Mapuches from south Chile and Argentina. They STILL fight for they land and they were THE BRAVEST WARRIORS in all the colonization period (in fact, they survived this period and still fight against the ocupation of their land
http://santiago.indymedia.org/news/2008/09/82256.php).
Lautaro, a mapuche chief, one of the most brilliant natives and militar strategist, in wikipedia you can find this about him
¨Lautaro was a Mapuche military leader and protagonist in the War of Arauco. Some of his tactics are currently studied in several war academies around the world.¨ http://en.wikipedia.org/wiki/Lautaro_(toqui)
Theese guys, the Mapuche, are one of the proudest warriors in all the world and one of THE ONLY WHO HELD THEIR LAND UNTIL NOW!.
¨With 6,000 warriors under his command, Lautaro attacked Fort Tucapel. The Spanish garrison couldn't resist the assault and retreated to Purén. Lautaro seized the fort, sure that the Spaniards would attempt to retake it. This was exactly what Valdivia tried to do with a reduced force, which was quickly surrounded and massacred by the Mapuches. The Battle of Tucapel would be Pedro de Valdivia's last, as he was captured and then killed.¨
¨The indigenous inhabitants of Araucanía, the Mapuche, had resisted for more than three hundred years Spanish attempts at conquest known as the Arauco Wars. They had also previously defeated the Incas. Whilst their frontier with the Inca empire had been along the Maule River, the Spaniards had succeeded in establishing it at the Bío-Bío River. When the Arauco Wars faded in the 18th and 19th centuries, commercial relations began to grow and cultural and ethnic mixing increased in the frontier territories. Ambrose O'Higgins and other Chilean authorities made agreements with several Mapuche chiefs to end the hostilities on both sides.¨
They were known as the best warriors and CAUPOLICÁN is the proof of that. When he was fighting to become a Mapuche Chief in his tribe, he had to held a great piece of a tree FOR 2 DAYS WITHOUT PASSING OUT!. Also, when he was captured he had to sit in a gigant spike that entered through his ass (yes), and he died bravely kicking his spanish executor and without screaming or saying a word!.
The spanish crown and then the government of Chile until the 19th century reconogized the Mapuche Nation with it's own territory and leaders, this was the only tribe in America who did this. Through war, because this is a tribe of fearsome warriors. Still in these times, if you have the bad idea to mess with one of them, you need 3 normal guys to take just one of them out, i've seen it with my own eyes!.
All this is not a myth, you can look in history you'll learn more about this tribe. For me they are the most militaristic tribe in America, they would be definetly Militaristic - Agricultural and their leaders should be Lautaro and Caupolican. Maybe not very known as the more popular ones like inca, aztecs, cherokee, etc... they are more comercial ones (also adding that Mapuches are known to be very against the capitalist system)
If you want to learn more about this tribe, here is a small info about them
http://en.wikipedia.org/wiki/Mapuche the proudest and bravest warriors natives of America, best vibes for you.
Nadeau from Chile.