Call the Fallen Eagles from the Mist
Call the Fallen Eagles From the Mist is a canonical ReMe level 65 spell introduced in HoHTL, p. 141. It is one of House Tremere's spells for summoning ghostly armies, but is not, apparently, exclusive to that House.
R: Touch, D: Moon, T: Group, Ritual
Opinion and Commentary
Since the Target is only Group, this spell only summons a small number of ghosts, not (for example) an entire Roman legion. A variant with Target: Boundary would yield impressive results if cast in the Teutoburg Forest.