To dream that you are on a battlefield, represents some major conflict occurring in your waking life. It may indicate a new situation, new problem or new relationship which you need to solve and conquer.
Whether you endure the deep internal conflict? Whether you feel antagonism in relation to some person or an external situation? It can be the instruction that you need to come to a consent and integration.
Deep internal conflict. Warring parties mean or your foes in real life, or internal contradictions.