Two articles on Christian Pacifism:

Pacifist-Aggressives vs. the Second Amendment: An Analysis of Modern Philosophies of Compulsory Non-violence. 1 Charleston Law Review (no. 3, 2008, forthcoming). VC readers say an earlier version of this last fall, as a working paper.

Then there's a new working paper, Christian Pacifism Before Constantine. Here's the abstract:

Much recent scholarship on early Christianity has emphasized the diversity of early Christian thought. This Paper presents evidence of diversity on early Christian belief and practice on the issue of pacifism. Notably, the diversity is found within orthodox Christianity itself. The claims of some modern writers that pre-Constantian orthodox Christians were virtually unanimously pacifist are not correct. In fact, some but not all of the early Patristic writers were pacifists. A significant number of Christians, including saints, served in the Roman army. The Paper discusses the following writers: Justin Martyr, Marcion, Irenaeus, Athenagoras, Clement of Alexandria, Tertullian, Hippolytus, Julius Africanus, Origen, Cyprian, Arnobius, and Lactantius, and also examines other sources of information about the early church.

The working paper is not about the sayings or actions of Jesus. It is about the actions and beliefs of early Christians.