0h 9min, apr 22, 1915 y - rom the close of the first battle of Ypres, in November, 1914, until the spring of 1915, the Ypres salient had remained comparatively quiet. About the middle of April, the Duke of Wurttember's army, 150,000 strong, made a partially successful attempt to squeeze out the salient east of Ypres.
