I still wouldn't like it. If your kingdom had a peaceful disposition, and were attacked by a warmongering one, the attackers would have a huge advantage that not only would their troops be better, but wouldn't run away. The defenders would have all their peace-keeping troops destroyed as they run away like idiots. They would run and die, why not fight and maybe win?
Picture made by Aametherar the orc (Elves are the best!)