Alignment - The straight line on which the front of a body of troops is formed, or is to form.
Base - Two points placed a distance apart, to indicate a line by the prolongation of which the proper alignment of a line or the covering of a column is regulated.
Change of front - A new alignment, either meeting or intersecting the former alignment.
Change of position - Moving troops off their own ground, and reforming to the front or flanks on a new alignment.
Close column - Troops or squadrons at one horse's length from one another. (Leaders in line on the right and serrefiles on the left of their respective units.)
Column - Troops on parallel and successive alignments, at a distance from One another equal to their own frontage.
Column of Half Squadrons - Half squadrons on parallel and successive alignments at troop wheeling distance.
Column of masses - regiments formed in mass, one behind the other, at such a distance that brigade mass can be formed to a flank by each regiment wheeling.
Covering - The act of one or more men, or bodies of men, placing themselves correctly in rear of one another.
Deployment - Formation of line from column.
Depth - Space occupied by a body of troops from front to rear.
Directing unit - The body on which the direction, pace, and alignment of a line, or relative positions of the several parts of a column depend.
Distance - Space between men or bodies of troops from front to rear.
Dressing - Taking up an alignment correctly.
Echelon - A succession of parallel units facing the same direction, each on a flank and to the rear of the unit in front of it.
Flank - Either lateral extremity of a rank, line, or column also the direction to either hand of a body, at right angles to its front.
Flank, directing - That by which units march or dress.
Flank, inner - That nearer to the point of formation or direction; also that which serves as a pivot when a body is changing its direction.
Flank, outer - That opposite to the inner or directing flank.
Front - In a general sense, the direction towards which a body of troops, or a single man is facing.
Frontage - The extent of ground covered laterally by troops.
Horse's length and width - Length 8 feet [2.4m], width 3 feet [0.91m], which includes 3 inches [7.62cm] on either side of rider's knee.
Interval - The lateral space between men or units from flank to flank.
Line - Troops formed on the same alignment.
Line of Masses - A line of two or more regiments each formed in mass with deploying interval plus 16 yards between them.
Mass (Regiment) - Line of squadron columns, closed to two horses' lengths interval between squadrons.
Mass (Brigade) - A line of regimental masses closed to 16 yards [14.63m] interval between regiments.
Pivot fixed - The term applied to the pivot, when during the wheel the pivot man turns on his own ground.
Pivot moving - The term applied to the pivot, when during the wheel the pivot man moves on the arc of a circle.
Rank - A line of men side by side.
Regiment - Two, three, or four squadrons (normally four), with regimental head-quarters. [Note: In the AIF, the establishement number of squadrons per regiment was always three. The full Militia and AIF Light Horse regimental organisation information may be found here: Peace establishment of Australian Light Horse, 1903-14. There were exceptions with the addition of a fourth squadron, mainly from regiments broken up for use as reinforcements at Gallipoli.]
Section - Four men, the No. 1 being the leader.
Serrefiles - Those riding in rear of a troop or squadron.
Squadron - Two, three, or four troops (normally four). [Note: In the AIF Light Horse the establishement number of troops was always four.]
Squadron column - A squadron with its troops in column.
Troop - One of the subdivisions of a squadron. [Note: In the AIF Light Horse the establishement number of men per troop was always forty two - ten sections plus two men.]
Wheeling - A movement by which a body brings forward a flank on a fixed or moving pivot.