Final answer:
In the REMARKS AND/OR VOUCHER NO. block of the DD Form 1898, the visiting unit or home station of the non-home station aircraft must be annotated for proper tracking and accounting of fuel distribution.
Step-by-step explanation:
When completing the Department of Defense (DD) Form 1898, known as the Energy Sale Slip, the REMARKS AND/OR VOUCHER NO. block is annotated with specific information if an aircraft being serviced is not from the home station. In this case, the servicing facility must note the aircraft's visiting unit or home station. This annotation is crucial for accurate tracking and accounting purposes, as it ensures that the fuel distribution is accurately recorded and billed to the appropriate unit.