The USS Columbia (CL-56) flew a Confederate Navy Ensign as a battle flag throughout combat in the South Pacific in World War II. This was done in honor of Columbia, the ship's namesake and the capital city of South Carolina, the first state to secede from the Union. Some soldiers carried Confederate flags into battle. After the Battle of Okinawa a Confederate flag was raised over Shuri Castle by a Marine from the self-styled "Rebel Company" (Company A of the 1st Battalion, 5th Marines). 

A Japanese Kamikaze hit the ship at 1729 hrs on 6 January 1945, during the Lingayen Gulf operation. The impact, on the main deck by the after gun turret, with the resulting explosion and fire, caused extensive damage and casualties. 
Southern men and women have always answered the call, form 1776 to today…who will deny them the right to their heritage and their flag?