But that's gotta suck. Some of the units who have transferred in and out will at least have had sister batallions rotating in and out.
Going in without having anybody in the unit who's "Been Here and Done That" would have to tighten your fundament.
Prayers, happy thoughts, warm fuzzies sent to those that are going over.
They probably have some NCOs with experience from Panama and the first bout with Iraq in 1991.