Absolutely nothing out of the ordinary happens at Palm Springs at this early date in the season; or that's the locals' story, anyhow, and they are sticking to it. Certainly nothing involving exceptionally stealthy Rukhi daringly taking out a well-armed squad of mokosh, without leaving so much as a bloodstain...
Legio XXXIII, Cohort II, Maniple I march confidently off into Palm Springs, and presumably attempt to set about seizing the Altairian Fields. They do not report back, and the locals deny ever seeing them arrive in the area at all.
Your trap is sprung slightly early by a handful of spear-wielding Lyzar mokosh that you assume must be some kind of scouting party. They march up to the Altairian Fields and begin making trouble for the farmers so you swing a little of your well-prepared ambush into motion and quietly remove them, one by one. That's four soldiers who won't be reporting back.