These chains that bind.
The “B.C.”: the Battalion Commander. A Battalion is usually two (usually more) Companies, up to five at most.
The “T.O.C”: “Tactical Operations Center”– that SGM Hoddson refers to is basically the field headquarters for the battalion.
Just to be clear, LTC Fassbender and SGM Hoddson do not represent any actual people I’ve known or served with.