Machines, Materiel and Munitions from the Human-Covenant Conflict, 2525 - Present is a document written by Dr. Robert McLees detailing the weaponry and vehicles utilized by both the United Nations Space Command and the Covenant during in the Human-Covenant War. It is the result of long-term in-the-field interviews between McLees and the personnel of the Marine unit E2-BAG/1/7.[1]