Jorge wears Grenadier
Primary: Blue Secondary: Silver
Grenadier helmet, grenadier coller but I don't know the shoulders.
ODST or Orbital Drop Shock Trooper armor
granadier
the commando helmet
Technically no, the only way to wear armor in halo 3 that you can wear in reach is some of the basic armor that was already available but the new pieces of armor such as the security shoulders, sapper chest with robot arm, an gungir helmet are only available in Reach.
Achievements and avatar awards.
He is wearing the Commando helmet that you unlock by ranking up.
armour
soidiers used to wear armour
You cannot wear any armour into daemonheim unfortunately. Inside the activity you will receive armour. Hope this helps :)
grenadier