[oh8eleven]

"First of all, it says Savidge is with the 1st Division, 1st battalion when he is with the 7th division, 1st battalion."

There is no 7th Marine Division so how could that raise your eyebrow?
I believe he's with 1/7 - i.e., 1st Battalion, 7th Marine Regiment
Semper Fi ...

[NotGullible]

Even at their website, the 1/7 do not specifically state what the 7 is (regiment, division, artillary, etc).
It is referred to by CNN only as the 1st battalion, 7th marines. The POINT is that it is NOT the 1st battalion 1st marines. I do not pretend to be military and all I will confess to is a lack of knowledge of nomenclature.