Fifty zebra warmounts held in reserve behind the enemy artillery, ridden by mercenaries rather than household guard.
When Boomer asks whether the spy reports cavalry in the area, Tran confirms it: the enemy do have mounts, fifty of the zebras, though the riders all appear to be Mercenaries rather than The Dream household guard. He taps a hill further south of the Artillery Batteries on the map to mark their position, and Elle believes they are in reserve in case the crawlers break through.
Boomer's reaction is the sharpest warning of the briefing. Cavalry, he says, are "the cheese sticks you really gotta look out for," especially now that the Epitome Household Guard is in the war — because if the Epitome family's veterans are the ones mounted, the crawlers are facing something far worse than hired riders.
Fifty striped warmounts, saddled and held in a reserve position on a hill behind the artillery lines.
The enemy's mounted reserve, positioned to counterattack any crawler breakthrough.