-------------------------------------------+----------------------- OCCASION. | UNIFORM. -------------------------------------------+----------------------- 23. On occasions of ceremony, as in | NAVY.—Dinner No. 19 or in hot weather and other | dress. circumstances where appropriate, | MARINE CORPS.— as a substitute for Uniform C. | Mess dress, with | white mess jacket. -------------------------------------------+------------------------ 24. On ordinary social occasions in the | NAVY.—Mess evening to which officers are invited| dress. in their official capacity, and where| MARINE CORPS.— hot weather and other circumstances | Mess dress, with white make it appropriate. | mess jacket. 25. When authorized under No. 21 by the | White trousers may be commanding officer. | prescribed for both | Navy and Marine Corps. -------------------------------------------+------------------------ In time of war the uniform prescribed for all ordinary occasions of duty is service dress, blue or white depending upon the temperature and weather. _The special full dress_ uniform consists of the cocked hat, a double breasted coat with tails at the back only as is the case in the ordinary civilian evening dress coat, trousers with gold stripes down the outer leg seams, black shoes, gold epaulets and the sword carried from a belt and slings of black cloth having gold stripes through it. _The full dress_ uniform consists of the same trousers, cocked hat, sword and belt as for special full dress, with a double-breasted frock coat with a rolling collar and lapels, and gold epaulets. _The evening dress uniform_ consists of a dark blue cloth evening dress coat and a white waistcoat cut after the prevailing style for civilian evening dress but fitted with gilt navy buttons, plain dark blue trousers, black patent leather shoes and the blue or white cap. Epaulets and full dress trousers (with the gold stripes on them) may be prescribed, in which case the uniform is known as _evening full dress_ and the cocked hat is worn with it. For wear in hot weather a _mess jacket_ of white is prescribed, cut after the fashion of the evening dress coat but without tails. The shoulder marks are worn with the mess jacket to indicate corps and rank, and either white or blue trousers may be worn with it. _The undress_ uniform consists of the frock coat without epaulets, plain dark blue or white trousers, the blue or white undress cap, black shoes and the sword carried from a black leather belt and slings.