Amiss

"Of course." The old man nodded, seemingly having expected that. "You will disguise yourself amongst our soldiers at the vanguard of our formation and only act when the Hlorn weapon is brought out, which according to our predictions based on previous assaults is presumed to be anywhere between five and seven minutes depending on multiple factors such as preparation, alertness, and, of course, luck."

Rui nodded memorizing those details, they made perfect sense.