Military courtesy is a set of rules that govern how members of the military address and treat each other. It is simply the display of good manners and politeness in dealing with other people. Military courtesy conveys respect from both subordinate and senior to each other. It is an extension and formalization of courtesies practiced in everyday life. Military courtesies form a strict and sometimes elaborate code of conduct. Some examples of military courtesies include:

• Proper forms of address ("Sir", "Maam", "Mister") and when each should be used
• The salute and the related concept of standing at attention
• Proper wear of military headgear
• Obeisance
• The rules for behavior in various ceremonies

Specifics can vary depending on an individuals rank, location, and circumstances. Military courtesy is vital to maintain military discipline and provides a basis for developing good human relations. The distinction between civilian and military courtesy is that military courtesy was developed in a military atmosphere and has become an integral part of serving in uniform. Military courtesy is not a one-way street; enlisted personnel are expected to be courteous to officers, and officers are expected to return the courtesy. Mutual respect is a vital part of military courtesy.