What functon(S) does the character Kiowa filfill within the novel? As a character, a soldier, a religious man? Why does O'Brien return to vietnam with Kiowa's moccasins?

In life, Kiowa is diligent and honest, introspective and compassionate. He is practical, carrying moccasins in order to be able to walk silently and helping his fellow soldiers to rationalize their own unfortunate actions, especially O’Brien’s killing of a young Vietnamese soldier. A Baptist and a Native American, he brings a perspective different from that of his fellow soldiers to the unfortunate events that befall the Alpha Company.

Kiowa’s death is symbolic of the senseless tragedy of war. He dies in a gruesome way, drowning under the muck of a sewage field about which his lieutenant, Jimmy Cross, has a bad feeling. Kiowa’s entirely submerged body represents the transitory nature of life and the horrifying suddenness with which it can be snatched away. There is no dignity to Kiowa’s death; he becomes another casualty in a war that strips men of their identity and turns them into statistics.O'Brien returns to Vietnam in the moccasins as a sign of peace and a symbol of his good friend.