Registered in other countries are ships that belong to owners in one country but fly the flag of another.
Military: This category includes the entries dealing with a country's military structure, manpower, and expenditures.
Military - note: This entry includes miscellaneous military information of significance not included elsewhere.
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).
Military service age and obligation: This entry gives the required ages for voluntary or conscript military service and the length of service obligation.
Money figures: All money figures are expressed in contemporaneous US dollars unless otherwise indicated.
National holiday: This entry gives the primary national day of celebration - usually independence day.
Nationality: This entry provides the identifying terms for citizens - noun and adjective.
Natural gas - consumption: This entry is the total natural gas consumed in cubic meters (cu m). The discrepancy between the amount of natural gas produced and/or imported and the amount consumed and/or exported is due to the omission of stock changes and other complicating factors.