DA Form 4787 – Fill Out and Use This PDF

DA Form 4787 PDF Details

This form is a key document in the U.S. Army's personnel reassignment system. It operates under AR 600-8-11 and applicable sections of the United States Code. Unit commanders and S1 personnel officers use it to coordinate permanent change of station (PCS) moves. It also protects the well-being of service members and their families at every stage of a relocation. The U.S. Army Human Resources Command requires accurate completion to prevent delays in movement approvals and quarters coordination.

Who Uses This Form

Several people are involved in completing and reviewing this reassignment processing form. The primary user is the service member being reassigned. The losing unit's S1 section collects the form and verifies the data. The gaining unit's commander reviews it to make quarters and assignment decisions. Family members may need to provide personal data for the dependent and quarters sections.

Purpose of the Form

The form serves several functions during Army reassignments. It helps S1 sections and personnel officers to:

• Document service member assignment and unit transition data
• Submit and approve family member movement to the new duty station
• Coordinate government quarters and BAH eligibility at the gaining installation
• Identify eligibility under the Married Army Couples Program (MACP)
• Record special family circumstances that may affect the assignment decision

Key Information Sections

The form is divided into structured sections that each capture specific assignment data:

• Personnel Data – Full name, rank, SSN, MOS, and gaining and losing unit designations
• Assignment Details – Effective date, report date, and the assignment order number
• Dependent Movement – Spouse and dependent details along with movement request status
• Quarters Request – Government on-post accommodations availability and BAH waiver information
• MACP Information – Military spouse's unit, current assignment preferences, and program eligibility

When to Submit

Service members should complete this form as soon as they receive PCS orders. Early submission gives the gaining unit time to arrange on-post accommodations and approve the family relocation. The losing unit's S1 section forwards the reassignment processing form to the gaining installation after review. For overseas assignments, the form may be required 90 to 180 days before the report date.

Required Documents for Submission

Gathering the right documents before starting the reassignment processing form saves time during the PCS cycle. You will need your official PCS orders from Army Personnel Command or your brigade S1, your current assignment record, and your spouse's assignment details if you are enrolled in MACP. Dependent identification documents and any existing quarters waiver letters should also be on hand. Service members who have recently had changes to their family status should update all dependent records with the S1 office before completing the form. Having every record ready reduces errors and shortens the processing form review period at both the losing and gaining units. This preparation step alone can prevent the most common delays in PCS move approval. Consult your losing unit S1 or check Army Publishing Directorate for the most current version of AR 600-8-11 and companion forms.

Processing Timeline

The reassignment processing timeline varies based on the type of PCS move. For a standard CONUS-to-CONUS assignment, the form typically moves through the losing unit's S1 office within five to ten business days. OCONUS assignments generally require a longer review, and commands often ask for the completed reassignment processing form 90 to 180 days before the projected departure date. If any section of the form is incomplete or contains errors, the gaining unit returns the reassignment processing form to the service member for correction, which can delay on-post quarters and movement approvals. Submitting an accurate, complete form on time prevents unnecessary holds on PCS orders and keeps the entire relocation on schedule. Checking with your losing unit S1 on standard processing form timelines for your specific command is always a good step before PCS orders are cut.

Common Mistakes When Completing the Form

Many service members experience delays because of avoidable mistakes on this reassignment processing form. The most frequent issues are:

• Incorrect SSN or unit designations – Transcription errors in the personnel data section are the leading cause of returned reassignment processing forms at S1 offices.
• Missing MACP section – Couples enrolled in the Married Army Couples Program often overlook this section, causing delays in joint assignment coordination.
• Incomplete assignment order number – The order number must match the official PCS orders exactly. A single digit error can stop the processing form workflow entirely.
• Outdated dependent information – If the service member's family status has changed since the last PCS move, all names and dates of birth must be updated before submitting.
• Skipping the quarters request section – Service members who plan to live off-post sometimes leave this section blank. The gaining unit still needs it completed to finalize BAH eligibility and on-post quarters availability.

Service members requesting leave alongside their PCS move can use the DA Form 31 to apply for leave concurrent with their reassignment. Additional Army paperwork submitted during a PCS move may include the DA 67-9-1 OER Support Form, the DA Form 87 Certificate, and the Military Dependent Form. A Military Power of Attorney is often needed when family members must act on behalf of the service member during the move.