From "70 Maxims of Maximally Effective Mercenaries"
maxim 17: The longer everything goes according to plan, the bigger the impending disaster.
maxim 47: Don't expect the enemy to cooperate in the creation of your dream engagement.
Calling it, Kogure will be the one who throw wench into a well-oiled plan.
So the OCU was in a so much desperate situation that they needed to resort to such risky plan, or was that as the troops used were mercenaries they did not care about the risks as the benefits are huge?