In one of the most expansive treatments of spiritual warfare, Puritan John Arrowsmith paints Christianity as the battle between the seed of the woman and the serpent. Beginning with Genesis 3:15, Arrowsmith explores themes of military duty, battle against the evil one, and the Christian’s victory and triumph in the Scriptures and classical writings. Arrowsmith’s work stands out among writings on spiritual warfare for its depth of research, its insistence that our warfare is chiefly theological, and its attempt to blend polemical and pastoral theology. He regarded his written efforts as “emissaries of evangelical piety, guardians and avengers of orthodoxy, interpreters of some of God’s oracles, and protective deities in many difficulties.” Carefully translated by David C. Noe with an extensive introduction by Chad B. Van Dixhoorn, this edition of Plans for Holy War presents modern readers with an exceptional and unique guide to spiritual warfare.