"Stop them! "
—Waif Signaller of Roughbark Company

Waif Signallers were Freeglade Lancers who used their special waif abilities to listen and speak in the minds of other people to spread commands and signals. Commanders or marshals would tell the waifs their commands and the waif would in turn communicate the message to every Freeglade Lancer who belonged to that company. This enabled the Freeglade Lancers to direct their soldiers quickly and strategically even during battle. There was waif signaller in each tree company.

Waif signallers were mentioned in The Blooding of Rufus Filantine.