- Branches: The names of the ground, naval, air, marine, and other defense or security forces
- Conscription: A description of the status of conscription in the nation in 1997.
- Expenditures > Percent of GDP: Current military expenditures as an estimated percent of gross domestic product (GDP).
- 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."
- Manpower > Reaching military age annually > Males: The number of draft-age males and females entering the military manpower pool in any given year and is a measure of the availability of draft-age young adults.
- Manpower reaching military age annually > Males: This entry is derived from Military > Manpower reaching military age annually, which gives the number of males and females entering the military manpower pool (i.e., reaching age 16) in any given year and is a measure of the availability of military-age young adults.
- Military branches: This entry lists the service branches subordinate to defense ministries or the equivalent (typically ground, naval, air, and marine forces).
- Military expenditures: This entry gives spending on defense programs for the most recent year available as a percent of gross domestic product (GDP); the GDP is calculated on an exchange rate basis, i.e., not in terms of purchasing power parity (PPP). For countries with no military forces, this figure can include expenditures on public security and police.
- Military service age and obligation: This entry gives the required ages for voluntary or conscript military service and the length of service obligation.
No date was available from the Wikipedia article, so we used the date of retrieval.
- Service age and obligation: This entry gives the required ages for voluntary or conscript military service and the length of sevice obligation.
- 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: All CIA World Factbooks 18 December 2003 to 18 December 2008; Office of the United Nations High Commissioner for Human Rights, Geneva, Switzerland, 1997. Data collected from the nations concerned, unless otherwise indicated. Acronyms: Amnesty International (AI); European Council of Conscripts Organizations (ECCO); Friends World Committee for Consultation (FWCC); International Helsinki Federation for Human Rights (IHFHR); National Interreligious Service Board for Conscientious Objectors (NISBCO); Service, Peace and Justice in Latin America (SERPAJ); War Resisters International (WRI); World Council of Churches (WCC); Stockholm International Peace Research Institute (SIPRI), Yearbook: Armaments, Disarmament and International Security.; CIA World Factbooks 18 December 2003 to 28 March 2011; CIA World Factbooks 2010, 2011, 2012, 2013; Wikipedia: List of countries by number of military and paramilitary personnel (The list); Uppsala Conflict Data Program, http://www.pcr.uu.se/research/ucdp/.
"Tonga Military Stats", NationMaster. Retrieved from http://www.nationmaster.com/country-info/profiles/Tonga/Military
"Tonga Military Stats, NationMaster." 1960-2013. <http://www.nationmaster.com/country-info/profiles/Tonga/Military>.
'Tonga Military Stats, NationMaster', <http://www.nationmaster.com/country-info/profiles/Tonga/Military> [assessed 1960-2013]
"Tonga Military Stats", NationMaster [Internet]. 1960-2013. Avaliable from: <http://www.nationmaster.com/country-info/profiles/Tonga/Military>.
"Tonga Military Stats", NationMaster. Avaliable at: nationmaster.com. Assessed 1960-2013.
"Tonga Military Stats, NationMaster," http://www.nationmaster.com/country-info/profiles/Tonga/Military (assessed 1960-2013)
"Tonga Military Stats", NationMaster, http://www.nationmaster.com/country-info/profiles/Tonga/Military (last visited 1960-2013)
"Tonga Military Stats", NationMaster, http://www.nationmaster.com/country-info/profiles/Tonga/Military (as of 1960-2013)