We shall not forsake our old alliance with Gondor, and while they fight we shall aid them: so say I and all who hold with me.
Not in half a thousand years have they forgotten their grievance that the lords of Gondor gave the Mark to Eorl the Young and made alliance with him.
It was inevitable that they should make alliance.
Sam’s guess was that the Smeagol and Gollum halves (or what in his own mind he called Slinker and Stinker) had made a truce and a temporary alliance: neither wanted the Enemy to get the Ring; both wished to keep Frodo from capture, and under their eye, as long as possible — at any rate as long as Stinker still had a chance of laying hands on his ’Precious’.
There are no more uses of "alliance" in the book.
Show samples from other sources
The Islamic governments formed an alliance to defeat Israel.