SEATTLE, Oct. 26 — Guglielmo Olivotto, an Italian prisoner of war, died with a noose around his neck, lynched at a military post on Puget Sound 63 years ago. Samuel Snow, 83, hopes that people will stop blaming him and the 27 other black soldiers convicted of starting the riot that led to Mr. Olivotto’s death. It was one of the largest Army courts-martial of World War II.This week, a review board issued a ruling that could lead to overturning the convictions of all 28 soldiers, granting honorable discharges and providing them with back pay. The board found that the...