tertullian on military service

To begin with the real ground of the military crown, I think we must first inquire whether warfare is proper at all for Christians. What sense is there in discussing the merely accidental, when that on which it rests is to be condemned? Do we believe it lawful for a human oath to be superadded to one divine, for a man to come under promise to another master after Christ, and to abjure father, mother, and all nearest kinsfolk, whom even the law has commanded us to honour and love next to God Himself, to whom the gospel, too, holding them only of less account than Christ, has in like manner rendered honour? Shall it be held lawful to make an occupation of the sword, when the Lord proclaims that he who uses the sword shall perish by the sword? And shall the son of peace take part in the battle when it does not become him even to sue at law? And shall he apply the chain, and the prison, and the torture, and the punishment, who is not the avenger even of his own wrongs? Shall he, forsooth, either keep watch-service for others more than for Christ, or shall he do it on the Lord’s day, when he does not even do it for Christ Himself? And shall he keep guard 100before the temples which he has renounced? And shall he take a meal where the apostle has forbidden him? And shall he diligently protect by night those whom in the day-time he has put to flight by his exorcisms, leaning and resting on the spear the while with which Christ’s side was pierced? Shall he carry a flag too, hostile to Christ? And shall he ask a watchword from the emperor who has already received one from God? Shall he be disturbed in death by the trumpet of the trumpeter, who expects to be aroused by the angel’s trump? And shall the Christian be burned according to camp rule, when he was not permitted to burn incense to an idol, when to him Christ remitted the punishment of fire? Then how many other offences there are involved in the performances of camp offices, which we must hold to involve a transgression of God’s law, you may see by a slight survey. The very carrying of the name over from the camp of light to the camp of darkness is a violation of it.
Tertullian "The Military Chaplet"XI