- Active Ground Forces > Active Personnel > 2008: Strength of active personnel in ground forces of European Union member states in 2008. Figures do not include personnel in navy and air force.
- Armed forces personnel > Total: Armed forces personnel are active duty military personnel, including paramilitary forces if the training, organisation, equipment, and control suggest they may be used to support or replace regular military forces."
- Defence spending > Percent of GDP: Defense expenditure as percentage of GDP. Figures are for the year 2010.
- Imports > USD: Arms transfers cover the supply of military weapons through sales, aid, gifts, and those made through manufacturing licenses. Data cover major conventional weapons such as aircraft, armored vehicles, artillery, radar systems, missiles, and ships designed for military use. Excluded are transfers of other military equipment such as small arms and light weapons, trucks, small artillery, ammunition, support equipment, technology transfers, and other services."
- War deaths: Battle-related deaths are deaths in battle-related conflicts between warring parties in the conflict dyad (two conflict units that are parties to a conflict). Typically, battle-related deaths occur in warfare involving the armed forces of the warring parties. This includes traditional battlefield fighting, guerrilla activities, and all kinds of bombardments of military units, cities, and villages, etc. The targets are usually the military itself and its installations or state institutions and state representatives, but there is often substantial collateral damage in the form of civilians being killed in crossfire, in indiscriminate bombings, etc. All deaths--military as well as civilian--incurred in such situations, are counted as battle-related deaths."
SOURCES: Various sources compiled into Wikipedia's Military of the European Union; International Institute for Strategic Studies, The Military Balance.; Stockholm International Peace Research Institute: The SIPRI Military Expenditure Database; Stockholm International Peace Research Institute (SIPRI), Yearbook: Armaments, Disarmament and International Security.; Uppsala Conflict Data Program, http://www.pcr.uu.se/research/ucdp/.