pvt Lem Liles 1918 and Pvt Mont Hartsell 1918

I am seeking the interment site of;
Mont Hartsellwho appears as a casualty in Soldiers of the Great War.A pvt., he was born in Rosston, Texas and enlisted in the draft in Montague county (Tex).He is listed as a casualty of the war on the war memorial in Gainesville, Texas.

(2) Lem Lileswho appears on the war memorial in Gainesville, Texas.He is on the Texas Death Index 11-11-1918 having passed in Montague county.He was born in Montague county Texas and registered for the draft in Rush Springs, Oklahoma.

thanks