The Signal Service in the European War of 1914 to 1918 - France #270656

The battle Of the Somme, in later 1916, afforded an Opportunity for testing the new means and Showed up the good points and Shortcomings of them all, while it was also the means Of demonstrating the undoubted success Of the deep bury and thus illustrating the possibility Of the adequate protection of forward lines. The forward telephone system had, however, received its deathblow in 1915 by the discovery of the extent Of enemy overhearing. The consequent slow strangulation of the service in the grip Of the precautions and restrictions imposed upon it in the endeavour to minimise this new danger was a feature Of the two succeeding years.