British armed forces known as The Auxiliaries departed Carlow early in February, they were followed a day later by The Black and Tans. This report covers the departure of The Black and Tans from Carlow Military Barracks. The regular British Army departed later in the week. Nationalist, February 1922. The Exodus. That section of the Royal Irish Constabulary , " popularly" known as " The Black and Tans " left Carlow on Monday evening. The departure was witnessed in idle curiosity. Some of the departees were in unusually good spirits, and cheered lustily as they took a last look at the Carlow Barracks.