would The Apache Tribe, enemy or fighting men, be a good thesis statement for a 15 page essay i have to write? i had tons of information.

Your idea is good. But you don't have a sentence. Take a stand -- which were they? Then draft a sentence stating your thesis.

These sites will help you.

http://www.unc.edu/depts/wcweb/handouts/thesis.html

http://owl.english.purdue.edu/owl/resource/545/01/