Thank you for asking me.
Sometime back someone asked the same question. May I repeat my answer:
No one is disqualified from becoming a Buddhist just because of his profession. The Buddha taught universal truths about this existence. The truth is that if one associates with unskilful and unwholesome profession, one must be prepared to face the unwholesome consequences. If one is prepared to be a soldier, then one must be prepared to kill and be killed in battle. The final decision rests on the individual. Buddhism does not force anyone to change one's profession.
The realities of this world and this existence are such that there are always this unsatisfactoriness and imperfections where many a time we are confronted, without much choice.