The battle field is symbolic of the field of life in which all creatures survive because of the death of others .

The essence of life is that it leaves by killing and eating. And that is the great mystery That myths have to deal with.

The primitive people that live by killing have to reconcile the psyche to this thing because for them the animals are menifestations of the devine power.
Not only that:they are wearing the skins of the animals,their tents are made out of animal skins,and so they are living on the death of all the time in a sea of blood.