Who is Hadji Murad from Great Short Works of Leo Tolstoy and what is their importance?

Hadji Murad is a Chechen warrior and Muslim who fights against Russian colonization. When his warlord kidnaps Murad's family as personal revenge, Murad surrenders to the Russians with the hope he can muster the resources to rescue his family. However, he is captured and beheaded by another enemy, Hadji Agha.