The Allies were aghast .
It was not the triumph OHL had hoped for : they had planned another Tannenberg by surrounding tens of thousands of British troops in the Cambrai salient , but had been thwarted by stout defense and fighting withdrawal .
The Allies were aghast , but it was not the triumph OHL had hoped for : they had planned another Tannenberg by surrounding tens of thousands of British troops in the Cambrai salient , but had been thwarted by stout defense and fighting withdrawal .