carrier air wing, one or two guided missile cruisers, a destroyer squadron of two or three guided missile destroyers, one or two attack submarines, and a logistics support ship, all under the command of an embarked flag officer at the OF6 (US pay grade O-7) or OF7 (US pay grade O-8) level. Groups in armies Within armies and land forces, groups are units or formations that are roughly equivalent to regiments and are commanded by colonels. Groups should not be confused with army groups which are multiple armies commanded by a general or field marshal. British Army Many group-sized formations have existed throughout the modern history of the British Army, especially post-Second World War. For instance, following the radical 1966 Defence White Paper, several signal groups were formed, such as the 1st Signal Group, 2nd Signal Group (Static Communications Network), and 3rd Signal Group. These formations were all commanded by a Colonel. Since 2012, several colonel sized groups have been formed, including: 7th Air Defence Group and 29th Pre-Hospital Divisional Medical Group. Canadian Army By the late 1980s, the doctrinal Canadian Army division organized manoeuvre forces into brigades while division level combat support and combat service support was organized into groups. The doctrinal division would have had an artillery group, an engineer group, and a support group. Present day Canadian Army divisions each contain a division support group commanded by a colonel. United States Army In the United States Army, certain non-aviation formations (e.g., currently the 1st Special Forces Command (Airborne)'s Special Forces Groups and PSYOP Groups and formerly some Air Defense Artillery, Armored Cavalry, Combat Engineer, Field Artillery, Military Intelligence, Military Police, and Signal Corps units) are/were also organized into groups, vice brigades or regiments. These units are/were generally smaller than brigades, usually consisting of from two to four battalions/squadrons (armored cavalry only), separate companies/batteries (air defense and field artillery)/troops (armored cavalry only), and/or detachments. See also Battlegroup (army), a composite building block of an army's fighting force Battlegroup of the European Union, an army battle group project of the European Union Battle group, a subunit of a United States pentomic division Battleship battle group, a battleship and its escorts Carrier battle group, a carrier and its escorts Task group, a subdivision of a naval task force Notes References Citations Sources Air force units and formations Military units and formations by size