What document signifies the approval of a service member's request for leave?

The correct answer, which is the Leave Request Form, is significant because this document is traditionally used by service members to formally request leave from duty. It captures essential information such as the reason for leave, dates of absence, and details pertaining to the service member’s duty status. When this form is filled out and submitted, it initiates the process of review and approval, leading to a decision on whether the leave can be granted.

Once the request is approved, the service member receives confirmation regarding their leave, but it is the initial Leave Request Form that constitutes the official record of the request for leave. Other related documents may be generated during or after this process, but the Leave Request Form is the initial and fundamental document in this context.