lement ▁to ▁George ▁Bird ▁Gr inn ell ’ s ▁work , ▁The ▁Fight ing ▁Che y ennes . ▁The ▁book ▁primarily ▁addresses ▁the ▁history ▁of ▁the ▁Southern ▁Che y enne ▁and ▁their ▁relations ▁with ▁white , ▁Ang lo - Amer icans , ▁both ▁in ▁trade , ▁treat ies , ▁and ▁military ▁policies ▁and ▁actions . ▁Other ▁main ▁topics ▁discussed ▁are ▁the ▁Southern ▁Che y ennes ▁government , ▁their ▁religion , ▁and ▁their ▁general ▁way ▁of ▁life ▁on ▁the ▁Great ▁Pla ins . ▁ ▁Ber th rong ’ s ▁The ▁Che y enne ▁and ▁A rap aho ▁Or de al : ▁Res ervation ▁and ▁Agency ▁Life ▁in ▁the ▁Indian ▁Territ ory , ▁ 1 8 7 5 - 1 9 0 7 ▁serves ▁as ▁a ▁sequ el ▁to ▁his ▁book , ▁The ▁Southern ▁Che y ennes . ▁Ber th rong ▁writes ▁that ▁this ▁particular ▁book ▁“ con cent r ates ▁on ▁the ▁struggle ▁of ▁the ▁Southern ▁Che y ennes ▁to ▁maintain ▁themselves ▁as ▁a ▁people ▁during ▁this ▁period ▁[ the ▁res ervation ▁period ]. ” ▁Begin ning ▁where ▁Ber th rong ’ s ▁previous ▁work ▁left ▁off , ▁this ▁book ▁addresses ▁the ▁history ▁of ▁the ▁Southern ▁Che y enne ▁once ▁they ▁had ▁been ▁removed ▁to ▁res erv ations , ▁until ▁ 1 9 0 7 , ▁the ▁year ▁that ▁Oklahoma ▁officially ▁became ▁a ▁state . ▁Ber th rong ’ s ▁work ▁shows ▁the ▁impact ▁and ▁significance ▁of ▁the ▁United ▁States ’ ▁government ’ s ▁attempt ▁to ▁assim il ate ▁the ▁Che y enne .