Following on from my earlier tweet- The origin, perhaps of the Medical Evacuation chain maps produced by McPherson in his Official History of the Medical Services in the Great War. pic.twitter.com/xiCuMw2kco
— David Blanchard (@Blanch6144) May 2, 2021
RT @Blanch6144: Following on from my earlier tweet- The origin, perhaps of the Medical Evacuation chain maps produced by McPherson in his O…