[[SPOILERS FOR HALO 3]]
Here is another picture of the ODSTs (a.k.a. Obital Drop Shock Troopers) in battle in Halo 00 a.k.a. the Ark in HALO 3. I like their armour and helmets!!

[[EXTRACT FROM WIKIPEDIA]]

Origins:
The Orbital Drop Shock Troopers origins most likely have their roots in the Martian Campaign of 2163 where extra-terrestrial Marine shock infantry was first used against the Neo-Communist Koslovics. The UN Marines were dropped from space and attacked ground locations on Mars, much like the 26th century ODST's.

Human-Covenant War:
T. Rymann firing on some Brutes.ODSTs were operating as early as 2525. The first division of ODST's was the 105th Orbital Drop Shock Trooper Division, which quickly gained a reputation as a brutal but effective fighting force.
Barring the personnel of the SPARTAN programs, ODSTs are one of the most effective forms of troops available to the UNSC, and the expectations on ODST units made them all-volunteer outfits, with some outsiders regarding such volunteers as 'crazy'. By 2552 their strength had swelled to a larger number of divisions in an attempt to fill the demands of the Human-Covenant War.

Some actively participated in training the SPARTAN-IIs, but the efficiency of that program was demonstrated when a single SPARTAN-II killed three ODSTs during an exercise, that Spartan being John-117. These fatalities resulted something of a rivalry between the two groups of super soldiers. Friction was heightened by the stunning success of the SPARTAN-II program, whose members proceeded to accumulate more confirmed kills than "any three divisions of ODSTs."

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There are still more interviews and character profiles coming on, but I have only managed to secure a few interviews with the F.S.O.F. members under the Republic's strict military protocols and actions. There are still many others. I will be uploading more in the near future, after finishing my assignments and projects.

Please read and comment on it. More to come...

I will be uploading some more covers of my favourite computer games and comic characters...so keep an eye out for them!

HALO BY BUNGIE.
PICTURE FROM HALOPEDIA.