=35.= _Dressing._ The front rank will dress as described in S. =25=. The rear rank men will continue looking to their front, and will cover and correct their distances, as the men of the front rank take up their dressing. =36.= _Marching in squad, and in file._ A squad in two ranks will be practised in the marches and variations of step taught in single rank. _Blank File._--A blank file will always be with the leading rank. He will move up into his place on the words _About Turn_ at the halt, or will step out to take his place in the leading rank when the squad is turned about on the march. _Covering and Distance._--While marching in line, the men of the rear rank must accurately preserve their covering and distance. _Marching in file._--Marching and changing direction in file will be practised as laid down in S. =30= and S. =31=, care being taken that the men in the rear rank dress correctly by the men of the front rank. =37.= _Changing Ranks._ When a squad turns about, the ranks are thereby changed, _i.e._, the former rear rank becomes the front rank, the former front rank the rear rank. The exception is when it is required to fall back for a short distance only, with a view of again turning in the original direction. The command _About--Turn_ is then preceded by the caution _The Squad will Retire_. The squad will turn in the original direction on the command _The Squad will Advance, About--Turn_. =38.= _The Diagonal March._ The diagonal march will be practised in two ranks, in the manner described in S. =28=. In addition to the instructions there given, the men in the rear rank must be cautioned to preserve their relative positions with the men of the front rank, in order that they may cover correctly when they are halted in line. =39.= _Changing direction, and forming up._ A squad will change direction or form up according to the instructions laid down in S. =29= and S. =32=. The rear rank will not turn on the caution, but in forming will conform to the movements of the front rank. =40.= _The formation of fours._ (PLATE II.) _Fours_ are the ordinary marching formation of infantry, and the greatest attention should be paid to training the recruit to keep the prescribed distance from the man in front. Order, comfort, and the reduction of fatigue, depend on the maintenance of exact distance by the sections of fours. _Test of marching._--The test of marching in fours is the position of the men when they turn into line. If there are no gaps or irregularities in the line, and the squad occupies the same frontage as before it formed fours, the marching is good. This test should be frequently applied during the instruction of recruits, and the slightest carelessness as regards the maintenance of the exact distance should be checked at once.