Can anybody tell me about the giant warrior statues along the river?
If you are talking about the statues by the Great River near the end of FoTR, they are of Isildor and Anarion.
Elder son of Elendil, who with his father and brother Anarion escaped from the Drowning of Numenor and founded in Middle-earth the Numenorean realms in exile; lord of Minas Ithil; cut the Ring from Sauron's hand; slain by orcs in the Anduin when the Ring slipped from his finger.
Younger son of Elendil, who with his father and his brother Isildur escaped from the Drowning of Numenor and founded in Middle-earth the Numenorean realms in exile, Lord of Minas Ano, slain in the siege of Barad-dur.
The statues were built by the numenoreans in Gondor at the mouth aof the Anduin. Check out the last chapter in the Silmarillion -The Rings of Power and the Third Age for more details. They are the ancestors of Aragorn and he is safe there.
If that is not what you are referring to, then I can't help you.
Am I correct are am I leading Kate astray? I hope not.