Our big green style, cannot be defeated!
-Sgt. A.J. Johnson - Halo 2 - Metropolis
It's Halo Wars, Halo: Reach, Halo: Combat Evolved, Halo 2/ Halo 3 ODST (Happen at the same time), & Halo 3.
Halo Wars & Reach don't actually follow the canon of the books. So really, those two are inaccurate.