06/19/2026
On this day in 1862, the Department of the Rappahannock, in an effort to help its soldiers understand the system of flags used by each command element, published today a circular explaining the “system of flags in use in this department.”
“CIRCULAR.] HDQRS. DEPT. OF THE RAPPAHANNOCK,
Manassas, Va., June 19, 1862.
The following explanation of a system of flags now in use in this department is published for the information of all concerned: General headquarters, national flag; First Division, red flag, six feet long and five feet wide; Second Division, blue flag, six feet long and five feet wide; Third Division, vertical red and blue flag, six feet long and five feet wide; Fourth Division, horizontal red and blue flag, six feet long and five feet wide; First Brigade of First Division, red and white flag, six feet long and five wide, vertical; Second Brigade of First Division, white, red, and white flag, six feet long and five wide, vertical; Third Brigade of First Division, red, white and red flag, six feet long and five wide, vertical; First Brigade of Second Division, blue and white flag, six feet long and five wide, vertical; Second Brigade of Second Division, white, blue, and white flag, six feet long and five wide, vertical; Third Brigade of Second Division, blue, white, and blue flag, six feet long and five wide, vertical; First Brigade of Third Division, red, white, and blue flag, six feet long and five wide, vertical; Second Brigade of Third Division, red, blue, and white flag, six feet long and five wide, vertical; Third Brigade of Third Division, white, red, and blue flag, six feet long and five wide, vertical; First Brigade of Fourth Division, red white, and blue flag, six feet long and five wide, horizontal; Second Brigade of Fourth Division, red, blue, and white flag, six feet long and five wide, horizontal; Third Brigade of Fourth Division white, red, and blue flag, six feet long and five wide, horizontal. The different regiments of the brigades will be designated by Nos. 1, 2, 3, 4, on the flag of the brigade to which they belong, white numbers on colored bars and colored numbers on white bars. The artillery will have the colors of the division to which it belongs, and be distinguished by a right-angled triangular, flag, six feet long and three feet wide at the staff. The cavalry have the same as above, except that the shape will be swallow-tailed. The engineers will have a white disk of diameter equal to one-third of its width on the flag of the division to which it belongs. The hospitals will be distinguished by a yellow flag. The subsistence depots will be designated by a green flag. These flags will be attached to a portable staff fourteen feet long, in two joints, and will be habitually displayed in front of the tent or from some prominent part of the house or vessel occupied as the headquarters which they designate, and on the march shall be carried near the person of the officer commanding the corps, division, brigade, or regiment it is immediate measures to supply the flag upon requisition approved by division commanders.
By command of Major-General McDowell:
SAML. BRECK,
Assistant Adjutant-General.”[1]
A clear and definitive statement!?! Everyone knows what flag belongs to whom. While this appears overwhelming, it is critical on the battlefield to find the officer you support or your superior, so you can convey intelligence or requests for aid.
1. OR, Vol. 51, pt. 1, 683-684.