In today's world of instant world wide communications it is easy to forget just how isolated people on the 'home front' felt during the First World War. Most combat was taking place on the opposite side of the world from New Zealand, and photographs from Gallipoli took six months to arrive and be printed. Even the newsreels showing 'the front' and army camps were screened months after the events happened. So, a glimpse of the men in command of the allied armies provided some sense of control and connection.
General Pershing was the commander of the American Forces, who entered the war on the Allied side in 1917. Pershing adamantly refused to integrate his troops into the other Allied armies, preferring to fight for the most part as a separate force. His men were ill-trained for the realities of trench warfare and suffered terrible casualties but by sheer numbers made an impact on the front line.
Judging by the consistent hand colouring this slide was part of a set made in 1918. MAVtech has others from this series on Kete.