The implicit possessive ??

The excitement and moral force of these possession rituals was especially attractive to unemployed and powerless village men, many of whom were teenagers.^{http://en.wikipedia.org/wiki/Boxer_Rebellion#cite_note-FOOTNOTECohen1997.5Bhttp:.2F.2Fbooks.google.com.2Fbooks.3Fid.3DjVESdBSMasMC.26pg.3DPA114_114.5D-8} The Boxers believed that through training, diet, martial arts and prayer they could perform extraordinary feats, such as flight. Furthermore, they popularly claimed that millions of spirit soldiers would descend from the heavens and assist them in purifying China of foreign oppression.^{http://en.wikipedia.org/wiki/Boxer_Rebellion#cite_note-9} The Boxers, armed with rifles and swords, http://en.wikipedia.org/wiki/Chinese_spirit_possession of cannon, rifle shots, and knife attacks. The Boxer beliefs were characteristic of http://en.wikipedia.org/wiki/Millenarianism movements, related to such practices as the Native American http://en.wikipedia.org/wiki/Ghost_Dance, a practice of a different society under stress.^{http://en.wikipedia.org/wiki/Boxer_Rebellion#cite_note-10}

I think "The Boxer beliefs" means "The Boxer's beliefs."
If so, I'd like to know why "The Boxer beliefs" is used in lieu of "The Boxer's beliefs."
Thank you in advance for your help.