The brigade combat team (BCT) is the basic deployable unit of maneuver in the U.S. Army. A brigade combat team consists of one combat arms branch maneuver brigade, and its assigned support and fire units. A brigade is normally commanded by a colonel (O-6) although in some cases a brigadier general (O-7) may assume command. A brigade combat team contains combat support and combat service support units necessary to sustain its operations. BCTs contain organic artillery training and support, received from the parent division artillery (DIVARTY). There are three types of brigade combat teams: infantry, Stryker, and armored. Currently, the U.S. Army is structured around the brigade combat team. In this program, divisions that previously had not deployed individual brigades due to lack of integral support have now been restructured. The 1st Armored Division, 25th Infantry Division, etc. now have the ability to deploy one or more BCTs anywhere in the world. These BCTs are intended to be able to stand on their own, like a division in miniature. The soldiers assigned to a BCT will stay at their assignment for three years; this is intended to bolster readiness and improve unit cohesion. Infantry brigade combat team The infantry brigade combat team, as of 2014, contains 4,413 soldiers and is organized around three battalions of infantry. Each type of brigade (infantry or airborne infantry) has the same basic organization. Each infantry brigade is equipped and capable of air assault operations. Also, most units typically maneuver in HMMWVs when deployed and operate as "motorized infantry" to facilitate speed of movement. The Infantry BCT can conduct entry operations by ground, air, and amphibious means. The infantry brigade combat team consists of seven battalions: one cavalry (reconnaissance) battalion, one brigade support battalion, one engineer battalion, three infantry battalions and one field artillery (fires) battalion. Infantry battalion (×3) Note: OCONUS (Hawaii, Alaska and Italy) based BCTs only have two infantry battalions Headquarters and headquarters company Rifle company (×3) Weapons company Cavalry squadron Headquarters and headquarters troop Mounted cavalry troop (×2) Dismounted cavalry troop Field artillery (fires) battalion Headquarters and headquarters battery Target acquisition platoon M119 105mm towed howitzer battery (×2) M777A2 155mm towed howitzer battery Brigade engineer battalion Headquarters and headquarters company Combat engineer company (×2) Signal network support company Military intelligence company Brigade support battalion Headquarters and headquarters company Distribution company Field maintenance company Medical company Headquarters platoon Treatment platoon Medical evacuation platoon