The basic field organization being the "gun group" and the "tactical group". The former being reconnaissance and survey, guns, command posts, logistic and equipment support elements, the latter being the battery commander and observation teams that deploy with the supported arm. In these armies the guns may be split into several fire units, which may deploy dispersed over an extended area or be concentrated into a single position. In some cases batteries have operationally deployed as six totally separate guns, although sections (pairs) are more usual.