The visitor at the average Army and Air Force post will probably see few ceremonies other than retreat. This ceremony, which closes the official day, may be accompanied either by appropriate bugle calls, or by a parade with a military band. In the former case, the music will sound _To the Color_, and in the latter, the _National Anthem_, while the flag is being lowered. Retreat is held daily at a fixed time, usually about 1700 hours. Posts with saluting cannon fire one round at the designated hour. At the first note of either the _National Anthem_ or _To the Color_, all dismounted persons face toward the color or flag and render the prescribed salute from attention; the salute is held until the last note of the music has been played. In the event the flag cannot be seen and the location of the flag staff is unknown to the person saluting, he faces toward the sound of the music. At parades and reviews and on other occasions when uncased colors are carried, all military personnel salute at six paces distance and hold the salute until the color or standard is the same distance past. When personal honors are being rendered to general or flag officers at a review, all military personnel present and not in formation salute during the ruffles, flourishes, and march. When a cannon salute is given, personnel in the immediate vicinity conform to the actions of the person being saluted. No salute is required during the 48 gun salute to the Nation on the Fourth of July. Military personnel also salute during the passing of a caisson or hearse in a military funeral. If attending the services at the grave side either as mourners or as honorary pallbearers, they stand at attention with the head-dress over the left breast at any time the casket is being moved, and during the service at the grave, including the firing of the volleys and the sounding of _Taps_. In cold or inclement weather, the head-dress is left on and the hand salute is rendered during the movement of the casket, the firing of the volleys, and the sound of _Taps_. On ships having 180 or more men of the seaman branch, the side is attended by side boys for visiting officers of our Armed Services, except in civilian clothes, and for officers of the Foreign Service when they come on board and depart. This courtesy is also extended to commissioned officers of the armed services of foreign nations. Officers of the rank of lieutenant to major inclusive are given two side boys, from lieutenant colonel to colonel four side boys, from brigadier to major general six side boys, and lieutenant general and above eight side boys. Full guard and band are given to general officers, and for a colonel the guard of the day but no music. During the hours of darkness or low visibility an approaching boat is usually hailed "Boat ahoy?" which corresponds to the sentry's challenge, "Who goes there?" Some of the answers are as follows: ANSWER MEANING: Senior in boat is: