Lieutenant Commander 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 and air forces is major, and in the Royal Air Force and other Commonwealth air forces is squadron leader. It is roughly equivalent to the Corvette Captain rank in central European countries and the Captain 3rd rank rank in eastern European/CIS countries.
Second lieutenant is a junior commissioned officer military rank in many armed forces. The lowest officer rank, it is usually placed below lieutenant or first lieutenant.
Staff sergeant is a rank of non-commissioned officer used in the armed forces of many countries. It is also a police rank in some police services.
Lance corporal is a military rank, used by many English-speaking armed forces worldwide, and also by some police forces and other uniformed organisations. It is below the rank of corporal.
A chief petty officer (CPO) is a senior non-commissioned officer in many navies and coast guards, usually above petty officer.
A master chief petty officer is a senior non-commissioned officer in many navies and coast guards, usually above some grade of petty officer.
A petty officer (PO) is a non-commissioned officer in many navies. Often they may be superior to a seaman, and subordinate to more senior non-commissioned officers, such as chief petty officers.
A NATO standard grade scale is used by the NATO and its partners for the purpose of comparing military ranks across the member nations militaries, as well as for a number of administrative tasks.
The Australian Defence Force's (ADF) ranks of officers and enlisted personnel in each of its three service branches of the Royal Australian Navy (RAN), the Australian Army, and the Royal Australian Air Force (RAAF) inherited their rank structures from their British counterparts. The insignia used to identify these ranks are also generally similar to those used in the British Armed Forces.
Lieutenant (abbreviated Lt, LT (U.S.), LT(USN), Lieut and LEUT, depending on nation) is a commissioned officer rank in many English-speaking nations' navies and coast guards. It is typically the most senior of junior officer ranks. In most navies, the rank's insignia may consist of two medium gold braid stripes, the uppermost stripe featuring an executive curl in many Commonwealth of Nations; or three stripes of equal or unequal width.
Rank comparison chart of armies/land forces of Commonwealth of Nations states.
Rank comparison chart of naval forces of Commonwealth of Nations states.
Rank comparison chart of naval forces of Commonwealth of Nations states.
Rank comparison chart of armies/land forces of Commonwealth of Nations states.
Commissioned officers' and enlisted rank comparison chart of all marine forces.
Rank comparison chart of officers for armies/land forces of Anglophone states.
Rank comparison chart of Non-commissioned officer and enlisted ranks for armies/land forces of Anglophone states.
Rank comparison chart of officers for navies of Anglophone states.
Rank comparison chart of Non-commissioned officer and enlisted ranks for navies of Anglophone states.
Rank comparison chart of Non-commissioned officer and enlisted ranks for air forces of Anglophone states.
Jamaican Army [1] 
Jamaican Coast Guard [1] 
Jamaican Air Wing 
