CYA meaning in Military and Defence ?

Cover your ass (British: cover your arse), abbreviated CYA, is an activity done by an individual to protect themselves from possible subsequent criticism, legal penalties, or other repercussions, usually in a work-related or bureaucratic context. In one sense, it may be rightful steps to protect oneself properly while in a difficult situation, such as what steps to take to protect oneself after being fired. But, in a different sense, according to The New York Times' language expert William Safire, it describes "the bureaucratic technique of averting future accusations of policy error or wrongdoing by deflecting responsibility in advance". It often involves diffusing responsibility for one's actions as a form of insurance against possible future negative repercussions. It can denote a type of institutional risk-averse mentality which works against accountability and responsibility, often characterized by excessive paperwork and documentation, which can be harmful to the institution's overall effectiveness. The activity, sometimes seen as instinctive, is generally unnecessary towards accomplishing the goals of the organization, but helpful to protect a particular individual's career within it, and it can be seen as a type of institutional corruption working against individual initiative.