In the course of May 1916, the Italian authorities expressed a desire that some independent observer from Great Britain should visit their lines and report his impressions. It was at the time when our brave and capable allies had sustained a set-back in the Trentino owing to a sudden concentration of the Austrians, supported by very heavy artillery. I was asked to undertake this mission. In order to carry it out properly, I stipulated that I should be allowed to visit the British lines first, so that I might have some standard of comparison.