US soldiers in Afghanistan have been caught handing out bibles; is this an example of unethical proselytizing?

The bibles were translated into the language of the Afghan people. There was footage of the leader of evangelical US soldiers explaining to a group of soldiers how to get around their own army’s regulations prohibiting proselytizing. See, the US constitution prohibits soldiers on foreign soil from proselytizing because the writers of the constitution had ethics but it seems that modern American Christians don’t have the same ethics. Do you think converting Muslims to Christianity using unethical tactics is a crime against humanity?