Sworn before the Eternals. Team Nameless is not a unit — it is a name applied to a handful of Ascendants who were blessed directly by the old gods and never accepted a chain of command. No throne, no flag, no city wall. Each one moves alone, carrying a purpose only the Eternal who blessed them can read.
The closest analogue the public lore allows is a "named-by-tenet" framing — a heavy-weight collective on paper. The difference is the leash: Nameless carries none. Freedom within the Oath is the point of the Oath. One of them on the field is logged at a thousand-to-one against line troops, and is not considered outmatched by a lesser deity.