Two dozen small autonomous crawler squads operating under standing orders, scattered across the battle map.
When Carl reads The Map in the Flag Room, the crawler order of battle is seven battalions — most split further and spread thin — plus two dozen small autonomous SOP squads of various sizes. Each squad has its own icon on the map, giving the whole display the look of a hex-based tabletop war game.
Their autonomy is the point: with the campaign already a mess in its opening hours, the SOP squads act on standing procedure rather than waiting on Carl, who cannot possibly micromanage every marker blinking in front of him.
Small independent units filling the gaps between the crawlers' seven battalions.