War

The three main parts of a country's armed forecd are the army, the navy, the air force. Officers in the forces give orders to their troops. When a war break out (= starts) two or more countries are at war. A war between different groups in the same country is called a CIVIL WAR. A country's enemies are the countries it is fighting againt and its allies are the countries which support it. If armed forces from one country enter another country, they incvade it. If they stay htere and take control of the country they occupy it. A country will try to defend itself againt attack fro another country. At the end of a war one country is defeated and surrenders (stop fighting and says that it is lost).