This is precisely the kind of search we like to see. It is a shame that most of what comes up on the Internet is baloney from corporations trying to pretend they have ethics. Here are a couple of selections that we thought worthy of including here. There is also an entire literature on business ethics, multi-cultural deliberative dialog, and so on.
Ethical and Legal Issues in Contemporary Conflict
Business Executives for National Security, 1 October 2009
Ethical Security: The Private Sector in Peace and Stability Operations
ISS Monograph Series No 139, November 2007
Ethics of Conduct for Peace and Stability Operations
Daniel H. Levine, Institute for Philosophy and Public Policy
December 2008 – December 2009
Ethics is how civilizations codify lessons learned with blood, so that future generation can build on lessons of the past.