So you want to join the tribe and serve the warlord uh ? Many youngsters died trying to live our way of life... Are you sure ?
You will suffer great pain and you will be hungry and scared, but the mountains of gold, the women and the sound of battle are the less important rewards a warrior can get. One day we will win the most important victory and when judgement day will come we will earn our place in the kingdom of heavens and feast with the gods of war !

Sounds like your kind of tribe ? Then /w Crazy Moe once you're InGame and tell him that you want to enlist.