only 1 use
- But we have suffered much loss in our battles with Saruman the traitor, and we must still think of our frontier to the north and east, as his own tidings make clear.5.3 — Book 5 Chapter 3 — The Muster of Rohan (64% in)
There are no more uses of "frontier" in The Return of the King.
Typical Usage
(best examples)