Onward Christian Soldiers...
Between the service's electric guitar religious tunes, marines stepped up on the chapel's small stage and recited a verse of scripture, meant to fortify them for war.
One spoke of their Old Testament hero, a shepherd who would become Israel's king, battling the Philistines some 3,000 years ago.
"Thus David prevailed over the Philistines," the marine said, reading from scripture, and the marines shouted back "Hoorah, King David," using their signature grunt of approval.
The marines drew parallels from the verse with their present situation, where they perceive themselves as warriors fighting barbaric men opposed to all that is good in the world.
"Victory belongs to the Lord," another young marine read.
Their chaplain, named Horne, told the worshippers they were stationed outside Fallujah to bring the Iraqis "freedom from oppression, rape, torture and murder ... We ask you God to bless us in that effort."
The marines then lined up and their chaplain blessed them with holy oil to protect them.
"God's people would be annointed with oil," the chaplain said, as he lightly dabbed oil on the marines' foreheads.