Of interest: a series of articles on war magic and warrior religion in the journal Social Analysis (vol. 58, Spring 2014), in an issue called War Magic and Warrior Religion: Sorcery, Cognition, and Embodiment. Here's the list.
Farrer, D. S., Cross-Cultural Articulations of War Magic and Warrior Religion, 58 Social Analysis 1 (Spring 2014).
Chan, Margaret, Tangki War Magic: The Virtuality of Spirit Warfare and the Actuality of Peace, at p. 25.
de Grace, Jean-Marc, Javanese Kanuragan Ritual Initiation: A Means to Socialize by Acquiring Invulnerability, Authority, and Spiritual Improvement, at p. 47.
Jokić, Željko, Shamanic Battleground: Magic, Sorcery, and Warrior Shamanism in Venezuela, at 107.
Farrar, D. S. and James D. Sellmann, Chanta of Re-enchantment: Chamorro Spiritual Resistance to Colonial Domination, at p. 127.
Sinclair, Iain, War Magic and Just WAr in Indian Tantric Buddhism, at p. 149.