Tolkien's novel did, however, specify that Dunlendings, as well as half-Orcs, fought in the battle of Helm's Deep. The Battle of Helm's Deep showed a lot of fighting Uruk-hai in the movie ...

As Saruman's own creations, the Half-orcs were present predominantly in the Battle of Helm's Deep and the Last March of the Ents. However, since many passed as Men, this evil breed continued to ...