The incident is described in "Welcome to Flanders Fields - The Great Canadian Battle of the Great War: Ypres, 1915", by Daniel G. Dancocks. It recounts:
"On May 3, Maj. McCrae had spent 17 weary days performing surgery on hundreds of wounded soldiers, and took a brief respite on the back of an ambulance near his dressing station beside the Canal de l'Yser. McCrae vented his anguish by composing a poem. In the nearby cemetery, McCrae could see the wild poppies that sprang up in the ditches there, and he spent twenty minutes of precious rest time scribbling fifteen lines of verse in a notebook."
"A young soldier watched him write it. Cyril Allinson, a twenty-two year old sergeant-major, was delivering mail that day when he spotted McCrae. The major looked up as Allinson approached, then went on writing while the sergeant-major stood there quietly. 'His face was very tired but calm as he wrote,' Allinson recalled. 'He looked around from time to time, his eyes straying to Lt. Helmer's grave.' When McCrae finished five minutes later, he took his mail from Allinson and, without saying a word, handed his pad to the young NCO."
"Sgt. Maj. Allinson was moved by what he read, saying later, 'The poem was an exact description of the scene in front of us both. He used the word 'blow' in that line because the poppies actually were being blown that morning by a gentle east wind. It never occurred to me at that time that it would ever be published. It seemed to me just an exact description of the scene.'"
I now feel a quiet pride that an Allinson relative -- Canadian cousin of my father -- was the first person to read the immortal words of "In Flanders Field" moments after it was penned by Major John McCrae.
-- Sidney Allinson.