Square division

rdf:langString Square division

rdf:langString A square division is a designation given to the way military divisions are organized. In a square organization, the division's main body is composed of four "maneuver," i.e., infantry regimental elements. Other types of regiments, such as artillery, are not "maneuver" units and thus are not considered in the "square," viz, "four" (infantry) regiments scheme. The usual grouping within a division would be to have two infantry regiments grouped together as an infantry brigade. (A U.S. infantry regiment consisted of three infantry battalions.) On an organizational chart, and if the entire division were formed up in the field, the two infantry brigades of two infantry regiments each (plus a machine gun battalion and a regimental headquarters and headquarters company in each regiment) would typically form a square, hence the name. Again, other "supporting" regiments (and their parent brigades, such as a divisional artillery brigade as found in U.S. Army divisions from circa 1917 until circa 1940) are not considered in this "square" division organization plan. Most European divisions were organized as square divisions prior to World War I. They were generally reorganized as triangular divisions during that war. A triangular division generally had its infantry organized into three infantry regiments (again, containing three infantry battalions) either directly controlled by the division headquarters or under a single brigade command. Thus, the designation "triangular" because only the infantry regiments (with no brigades) were considered. Once again, artillery, and other types of regiments, were not considered in the term "triangular" division. For example, the organizational changes of the Imperial German Army's 1st Division. Triangular divisions were smaller, allowing for more divisions to be formed, and were considered more suited for the positional warfare which characterized World War I. A square division typically advanced with two infantry brigades in line or with the brigades echeloned (one ahead of the other), with one infantry regiment forward and one in reserve ready to engage when the first regiment came into contact with the enemy. In contrast, the triangular division normally employed a "two up, one back" arrangement for its three infantry regiments. In positional warfare, the infantry regiments were formed in line to cover as much of a sector as possible with their three infantry battalions usually positioned with two battalions forward and one battalion positioned behind them to provide "defense in depth."An infantry regimental commander would typically hold a reinforced rifle company or two (and rarely an entire battalion) from one of his three infantry battalions, with supporting arms, in the "rear" as the "regimental reserve." Similarly, infantry battalion commanders would typically hold a reinforced rifle platoon (and sometimes an entire rifle company) from one of his battalion's rifle companies, with supporting crew-served weapons, as the "battalion reserve."