The Orc's most capable of marauding and raiding are actually those whom have been gifted incredible technology by another race that has posed themselves as God's to the more primitive Orc's. Basically think "Chariots of the Gods," Or the Cuotl from Rise of Legends.
I use the Half-Orc Stats for the things called "Orc" in my setting so they just get a floating +2 to any one stat.