Norman McMahon
... that the rapid-fire rifle training implemented in the British Army by Norman McMahon in 1909 proved effective in the opening stages of the First World War?
... that the rapid-fire rifle training implemented in the <a href="./British_Army" id="mwCIo" rel="mw:WikiLink" title="British Army">British Army</a> by <b id="mwCIs"><a href="./Norman_McMahon" id="mwCIw" rel="mw:WikiLink" title="Norman McMahon">Norman McMahon</a></b> in 1909 proved effective in the opening stages of the First World War?