Article Title: Military Retired Pay | Military Compensation
Article Excerpt: "...There are two methods for determining the retired pay base. They are the final pay method and the high-36 month average method. The final pay method, as the name implies, establishes the retired pay base equal to final basic pay. The high-36 method is the average of the highest 36 months of basic pay divided by 36. This is generally the last 3 years of service and is sometimes called high-3. The method used depends upon when the member first entered military service.
The method is determined by DIEMS (Date of Initial Entry to Military Service) or DIEUS (Date of Initial Entry to Uniformed Services). The date a member first entered uniformed service in any capacity establishes DIEMS. This date is fixed---it does not change. Departing the military and rejoining does not affect DIEMS.
Some individuals have unique circumstances that complicate determining their DIEMS. Here are a few examples..."
Reference Source: defense.gov
