The Battle of Tsushima was fought between Japan and Russia in 1905. It was the most notable naval battle during the century before the First World War and one of the most decisive naval clashes ever. Although it has left a deep and indelible mark on both belligerents, it was only natural that the battle would remain a center point in the collective memory of the country that won it. Indeed, throughout the years before Japan's surrender in 1945, and to a lesser extent even after, the battle continued to be the focus of commemoration and pride, possibly more than any other single battle the country had ever won or lost. Nonetheless, with the passing of time and changing circumstances, attitudes toward the battle witnessed their ups and downs much like the attitudes toward the entire war against Russia, empire, and militarism. Accordingly, the history of the battle's collective memory can be divided into four distinct phases: the immediate response; the subsequent forty years of imperialistic expansion; the era of Allied occupation; and the years since a democratic Japan regained its sovereignty. This article aims to examine the winding road of this memory, its sources and repercussions.