Not in the books though, I don't know the exact words so I will kinda dumb it down so I can explain it to myself, he said that there where three type of people, commanding officers, teammates, and enemy's, follow the orders of the commanding officers orders, help teammates, eliminate enemy's, but that was before halo 1 combat evolved, that's where he starts to get his own personality and not so much as a killing machine.
its a reference towards how they call Spartans Demons, and since they are "faceless too" and have similar look to Spartans, (smaller and weaker though, and come in a larger number) they are called Imps
Which is more badass, falling out of the sky, landing on a Chieftain, ejecting the pod door and killing a Prophet, or just punching it ONCE, claiming you killed them, and then getting glory that should have been an ODST's?
I think just as highly of the ODSTs. They are, just as good as Spartans. Spartans (Aside from MK III) have a lower mortality rate simply because of the tech, and evac, and gear they get. If an ODST makes it back, it's because HE saved himself. not his gear.
Well you also have to remember that Spartans have a lower mortality rate because they were trained in warfare since they were 5 years old. What I admire about the ODSTs is that they have very low mortality rates, get the job done, and make it back alive, and they're un-augmented humans.
With your description, I agree wholeheartedly.....Infantry, Marines, ODSTs, Spartans. They all run toward gunfire. It's not a lack of fear, they know there is a greater cause that outweighs their fear, and so they push forth with effort. Great job.
The saying 'Spartans never die' comes from the UNSC's decision to never mark them as K.I.A. doing so would be too demoralizing for the troops while facing an enemy that is vastly more powerful.
O.D.S.T.'s however are the most elite of soldiers, and are sent into battlefields that have a more than 70% probability of death. Not to mention they drop from orbit to get into said battlefields, a method that if one thing goes wrong they die.
Spartans do that all the time. There's even a level in Halo 2 where you do it. Also, Spartans board enemy ships, go way deep into enemy territory with no backup and jump out of spaceships and pelicans with out a drop pod. But yeah, it takes serious balls to do that with without super strength and power armor.