Taken on Strength is a

British British may refer to: Peoples, culture, and language * British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies. ** Britishness, the British identity and common culture * British English, ...

and

British Commonwealth The Commonwealth of Nations, simply referred to as the Commonwealth, is a political association of 56 member states, the vast majority of which are former territories of the British Empire. The chief institutions of the organisation are the Co ...

term referring to a person being added to a

military organization Military organization or military organisation is the structuring of the armed forces of a state so as to offer such military capability as a national defense policy may require. In some countries paramilitary forces are included in a nation ...

, or in some cases becoming an employee of a government department, agency or

statutory corporation A statutory corporation is a government entity created as a statutory body by statute. Their precise nature varies by jurisdiction, thus, they are statutes owned by a government or controlled by national or sub-national government to the (in ...

. For an aircraft or a vessel, it is the date put into operational service. To Strike off Strength is when a person leaves

military service Military service is service by an individual or group in an army or other militia, air forces, and naval forces, whether as a chosen job (volunteer) or as a result of an involuntary draft (conscription). Some nations (e.g., Mexico) require a ...

civil service The civil service is a collective term for a sector of government composed mainly of career civil servants hired on professional merit rather than appointed or elected, whose institutional tenure typically survives transitions of political leaders ...

, or when the aircraft or vessel leaves operational service.

References

Military terminology {{Mil-stub