You can call it a failure, it's just not a military one.
Hell there's an argument to be made that the US should downsize its military because there's no universe in which exercising its full capability is not either the end of the world as we know it or absolute political suicide.
> You can call it a failure, it's just not a military one.
Would that work in corporate America? Try telling your boss, "I didn't actually fail because had you given me an unreasonable amount of time and resources I would have succeeded." Every project has an expectation of time and cost, and if you can't meet that expectation then you failed.
If your boss sets patently unreasonable expectations then that's arguably his failure as opposed to yours though obviously he will attempt to shift the blame to you.