This is contrary to certain definitions of freedom. For example, Debian's requirements[1] are that "The license must not restrict anyone from making use of the program in a specific field of endeavor".
As others have said "warfare" and "suffering" are too hard to define anyway.
I think it's pretty clear. The definitions have been made ambiguous by the permanent state of military action across the world. We're desensitised to it.
As others have said "warfare" and "suffering" are too hard to define anyway.
[1] http://www.debian.org/social_contract#guidelines