United States v. Moser

Background

A retired naval officer sued the United States to recover the difference between a Captain’s pay and a Rear Admiral’s pay, claiming a 1899 Navy law required higher retired pay for anyone who “served during the civil war.” He had forty years of service from entering the Naval Academy and was retired under a separate rule for long service. The central factual dispute was whether his time as a cadet at the Naval Academy counted as “service during the civil war.” The Court of Claims previously decided three suits for him in his favor, while another case (Jasper) had ruled the other way based on a later statute.

Reasoning

The Court had to decide whether the officer’s Naval Academy service could be relitigated after those earlier favorable rulings. The Supreme Court explained that when a fact or legal question has already been definitely decided between the same parties, it is final and cannot be reopened — even if the earlier court reached that conclusion by a mistaken legal theory. Applying that principle, the Court held the issue of the officer’s Civil War service had been actually litigated and decided in the prior suits and therefore could not be disputed again.

Real world impact

As a result, the officer keeps the right to recover the pay difference and the judgment in his favor stands. The decision emphasizes that once courts have resolved an individual’s status under a law, the Government cannot relitigate that same status against the same person. This ruling resolves the present pay claim, but it depends on the specific history of earlier cases between these parties rather than creating a broad new rule for all military pay disputes.