Our party's navigator, for her motivation of pride, rolled Saint-Blessed Power Armour as her heirloom item. She wrote her character as being from a particularly militant navigator house and that the power armour has been specially fitted with a sliding armour plate over her third eye. She has made excellent use of her Lidless Stare, so much so that she is practically the party's heavy, bursting on to a ship's bridge and burning through the souls of all before her.
Because of this, I was wondering if there was ever any mention of navigators being used on the battlefield, making heavy use of their third eye's mind destroying power?