To the Editor : Paul Rieckhoff 's combat experience in Iraq -LRB- '' Do Unto Your Enemy , '' Op-Ed , Sept. 25 -RRB- and Arthur T. Hadley 's combat experience in World War II -LRB- '' Firing Potent Words , From a Tank , '' Op-Ed , Sept. 25 -RRB- show the benefits of strict compliance with the Geneva Conventions and the power of '' America 's moral integrity '' in Europe until Germany 's defeat ; and at first in Iraq , until we lost it through noncompliance .