For certain drills and for service in the field the coat may be dispensed with, in which case the olive-drab flannel shirt is worn and the corps insignia and insignia of rank are then worn upon the collar of the shirt.
The hat cord worn on the service hat by General Officers is a double cord of gold bullion with acorns of the same material at the ends, and that worn by other commissioned officers is the same except that it has black silk intermixed with the gold.
Army Field Clerks and Field Clerks Quartermaster Corps wear hat cords made of black and silver twisted strands.
Members of the Officers Training Corps undergoing training in the camps provided for that purpose wear a hat cord made of red, white and blue twisted strands.
The overcoat is worn with the service uniform when necessary.
Mounted officers wear tan boots, spurs and drab leather riding gloves with the service uniform.
The dress uniform consists of a dark blue cloth, single-breasted coat extending to one-third of the distance from the point of the hip to the knee; blue cloth trousers (the shade depending upon the rank and corps of the wearer as later described); a bell-crowned cap, of dark blue cloth having the coat of arms of the United States embroidered in gold on the front of the crown at the center, with a sloping visor of black patent leather and a chin strap of gold braid three-eighths of an inch in width and eight inches long attached above the visor by a small gilt Army button at each end of the visor; black shoes; white shirt, collar and cuffs; and white gloves.
The dress coat for General officers (officers of the rank of General, Lieutenant General, Major General and Brigadier General) is double breasted with a standing and falling collar, two rows of buttons down the front as follows: for a General twelve buttons in each row arranged in three groups of four, for a Lieutenant General ten in each row arranged in three groups, the upper and lower groups of three and the central group of four, for a Major General nine in each row arranged in three groups of three each, and for a Brigadier General eight in each row arranged in groups of two; and the cuffs trimmed with three small size gilt army buttons on each back seam. The collar has on each side the proper insignia indicating staff corps, and on each shoulder there is a shoulder strap four inches long and one and seven-eighths inches wide with a border of raised gold embroidery three-eighths of an inch wide, the field of the strap being of dark blue cloth and bearing the stars indicating the rank of the General officer. These shoulder straps are worn with one of the sides touching the shoulder seam of the sleeve.
The dress coat for all other officers is a single-breasted sack coat of dark blue cloth, with a standing collar, closed in front by buttons or hooks concealed by a fly, having a vertical opening on each side at the hip six inches high, the collar, front edges, bottom edge of the coat and the vertical side openings being trimmed with lustrous black mohair braid one and one-half inches wide. On each shoulder a shoulder strap of the same size as that described for General officers is worn, the field of the strap being the distinctive color of the arm of the service to which the wearer belongs and having the insignia of rank embroidered upon it. On each side of the collar the corps insignia are worn to indicate the corps or branch of the service to which the wearer belongs.
The dress trousers for General officers (except Chief of Coast Artillery, Chief of Engineers, Quartermaster General and General Officers of the Quartermaster Corps) are made of dark blue cloth without stripes or other trimming. For the General officers excepted in the last sentence the trousers are of dark blue cloth trimmed down the outer leg seams with stripes as follows: