on 27 august , a squadron of the royal naval air service Supply ( rnas ) flew Motion to ostend , to conduct Action air reconnaissance Scrutiny between bruges , ghent and ypres .

general erich von falkenhayn , head of the ( `` ohl '' , german general staff ) , then tried a limited offensive Judgment_communication to capture Conquering ypres and mont kemmel , from 19 october to 22 november .