Which form would be used for documenting a standing delivery order?

The form used for documenting a standing delivery order is PS FORM 3801. This specific form is designated by the United States Postal Service for managing and recording standing delivery orders, which are arrangements made for the regular delivery of mail to a specific address.

By using PS FORM 3801, postal clerks can ensure that both the sender and recipient have a clear understanding of the delivery arrangements, including the frequency and duration of the service. This form effectively captures the necessary details for postal tracking and management, making it a critical tool in the process of standing deliveries.

The other forms listed serve different purposes within military and postal systems and are not related to standing delivery orders. For instance, PS FORM 3883 pertains to the delivery of registered mail, FM 1-0 relates to Army personnel management, and AR 25-400-2 involves records management within the Army, none of which apply to the documentation of standing delivery orders.