After the first American contingent arrived at the end of June 1917, Pershing and his officers began to implement their training plan, drilling the men behind the lines before gradually introducing them to trench warfare.
1917
6月底第一批美国部队抵达后,珀辛和他的军官们开始实施他们的训练计划,在前线后方训练士兵, 然后逐渐让他们接触
战。