query: instance_of lieutenant commander
supports: Major is a military rank of commissioned officer status, with corresponding ranks existing in many military forces throughout the world. When used unhyphenated, in conjunction with no other indicators, Major is one rank senior to that of an army Captain, and one rank subordinate or below the rank of Lieutenant colonel. It is considered the most junior of the field officer ranks. Lieutenant commander ( also hyphenated lieutenant - commander and abbreviated Lt Cdr , LtCdr . or LCDR ) is a commissioned officer rank in many navies . The rank is superior to a lieutenant and subordinate to a commander . The corresponding rank in most armies ( armed services ) and air forces is major , and in the Royal Air Force and other Commonwealth air forces is squadron leader . The NATO rank code is mostly OF - 3 . A lieutenant commander is a senior department officer or the executive officer ( second - in - command ) on many warships and smaller shore installation , or the commanding officer of a smaller ship / installation . They are also senior department officers in naval aviation squadrons . An army (from Latin "arma" "arms, weapons" via Old French "armée", "armed" (feminine)) or ground force is a fighting force that fights primarily on land. In the broadest sense, it is the land-based military branch, service branch or armed service of a nation or state. It may also include other branches of the military such as the air force via means of aviation corps. Within a national military force, the word army may also mean a field army. They differ from army reserves who are activated only during such times as war or natural disasters. Military ranks are a system of hierarchical relationships in armed forces, police, intelligence agencies or other institutions organized along military lines. Usually, uniforms denote the bearer's rank by particular insignia affixed to the uniforms. Ranking systems have been known for most of military history to be advantageous for military operations, in particular with regards to logistics, command, and coordination; as time continued and military operations became larger and more complex, military ranks increased and ranking systems themselves became more complex. The Battle of Britain (German: "die Luftschlacht um England", literally "Air battle for England") was a combat of the Second World War, when the Royal Air Force (RAF) defended the United Kingdom (UK) against the German Air Force (Luftwaffe) attacks from the end of June 1940. It is described as the first major campaign fought entirely by air forces. The British officially recognise its duration as from 10 July until 31 October 1940 that overlaps with the period of large-scale night attacks known as the Blitz, while German historians do not accept this subdivision and regard it as a campaign lasting from July 1940 to June 1941. Commander (French: "Commandeur") is a common naval and air force officer rank. Commander is also used as a rank or title in other formal organisations, including several police forces.  Squadron leader (Sqn Ldr in the RAF and PAF; SQNLDR in the RAAF and RNZAF; formerly sometimes S/L in all services) is a commissioned rank in the Royal Air Force and the air forces of many countries which have historical British influence. It is also sometimes used as the English translation of an equivalent rank in countries which have a non-English air force-specific rank structure.  The military, also called the armed forces, are forces authorized to use deadly force, and weapons, to support the interests of the state and some or all of its citizens. The task of the military is usually defined as defense of the state and its citizens, and the prosecution of war against another state. The military may also have additional sanctioned and non-sanctioned functions within a society, including, the promotion of a political agenda, protecting corporate economic interests, internal population control, construction, emergency services, social ceremonies, and guarding important areas. The military can also function as a discrete subculture within a larger civil society, through the development of separate infrastructures, which may include housing, schools, utilities, food production and banking. A field officer, field grade officer, or senior officer is an army, marine, or air force commissioned officer senior in rank to a company officer but junior to a general officer. In most armies this corresponds to the ranks of major, lieutenant colonel and colonel, or their equivalents. Some countries also include brigadier in the definition. The Central Powers , consisting of Germany, , the Ottoman Empire and Bulgaria  hence also known as the Quadruple Alliance  was one of the two main factions during World War I (191418). It faced and was defeated by the Allied Powers that had formed around the Triple Entente, after which it was dissolved. The Royal Air Force (RAF) is the United Kingdom's aerial warfare force. Formed towards the end of the First World War on 1 April 1918, it is the oldest independent air force in the world. Following victory over the Central Powers in 1918 the RAF emerged as, at the time, the largest air force in the world. Since its formation, the RAF has taken a significant role in British military history, in particular, playing a large part in the Second World War where it fought its most famous campaign, the Battle of Britain.
candidates: armed forces army battle command commander company complex construction die empire field field army food force grade insignia june may military military branch military history military rank nation october part period police production promotion ranking role sense service society squadron structure subculture system title two world war
answer: military rank