yes we should
col.
Col.
The abbreviation for Lieutenant Colonel is "Lt. Col."
Colonel has 2 syllables. (Col-onel)
colonel
Colonel is higher. Lieutenant is a modifier that can be applied to colonel, general and governor and indicates an inferior rank to the rank it modifies.
As either Col or Lt Col, really is their preference but either is correct.
LTC or Lt. Col In relation to Civil War, I have seen it written Lieut.-Colonel which is not much of an abbreviation and Lt-Col.
Col. Corn
Col "Name" (RET) for Air Force and Marine Corps, COL "Name" (RET) for Army.
Jim (Jane) Colonel Sir (Ma'am) or Mr/Mrs. Jim/Jane Doe, Col, USAF Retired
"Bloody" Lt. Col. Banastre Tarleton