The Chief is the smartest and strongest warrior in the entire Tribe.
Once a small village of poorly educated residents comes under the Chief's control, their reign begins. It may be a time of peace, with simple farming and the gathering of valuables, or a time of war, with battles and raids. The Chief personally makes every decision concerning the Tribe and its spoils, so the way those spoils are obtained is entirely their choice, based on their wishes, needs, and capabilities.
Preserving the Tribe is the Chief's foremost task, so they must protect it by every available means. They may post sentries at the entrances to alert everyone and hold back the first assault in case of danger, or send patrols in small groups around the surrounding area. The particular method does not matter; effectiveness is what counts, and that depends on the Chief's decisions.
For the Tribe, acquiring expensive, beautiful, jingling trinkets can be an excellent way to improve life. The Chief, whose people rely primarily on strength, can assemble a party to venture deep into the region in search of loot and to rob travelers. This should not be overused, however: leaving the Tribe defenseless or encountering a large group of travelers could ruin every effort.
The entire Tribe depends on the Chief's decisions, awaits their orders, and must be led by them. Every success and loss, every prize and deprivation, every battle and clash is the achievement of the Chief and the Tribe. To secure a glorious future for the whole people, decisions must therefore be correct and swift.