Question: "Something that is in use for a limited period of time, and is not permenant is given what description?"  Context: "The Health Services Group is a joint formation that includes over 120 general or specialized units and detachments providing health services to the Canadian Armed Forces. With few exceptions, all elements are under command of the Surgeon General for domestic support and force generation, or temporarily assigned under command of a deployed Joint Task Force through Canadian Joint Operations Command."  Answer:
The answer to this question is:
temporarily