I may be looking at things through an overly narrow lens, but some elements of the British Army seem to have been caught off guard by the degree of danger from mortar fire in Normandy. See the attached bit from a report, the part about officer casualties. Later in the report the author forwards the request for overhead protection for self-propelled guns but adds a bit which is basically "the fighting in Normandy may be abnormal, wait and see whether we really need to do this". My questions are - was there a failure to pay attention on the part of Home Forces to reports from the Mediterranean? Had 8th Army already encountered this? - was there a difference in the number of mortars that German units were equipped with, in North Africa, Sicily/Italy, or France?