Fedele Temperini, the Savior along the Piave?

Historian Marino Perissinotto has identified the WWI soldier who inadvertently saved Hemingway’s life by taking the brunt of a mortar explosion on July 8th, 1918.  By whittling down James McGrath Morris’s list of 18 candidates (see his postscript to The Ambulance Drivers), Perissonotto hypothesizes that Fedele Temperini, a 26-year-old soldier from Montalcino, was Hemingway's savior along the Piave.  For more details about Temperini and Perissinotto's historical research, see Morris’s recent article