Padre Pio always welcomed American soldiers to San Giovanni Rotondo, the American chaplains used to bring them up to visit. He sometimes heard their confessions . . . even when they didn't speak Italian (and he didn't speak English). He said his Guardian Angel translated for him, and some of the soldiers said that was absolutely true . . . . he was indeed a remarkable man.
He had the gift of 'reading hearts' - he could discern a penitent's sins even before they confessed or when they omitted a sin. "Haven't you forgotten thus and so?" he would ask, and name the very sin they had forgotten.
There's also the story of Allied bomber pilots encountering a Franciscan priest flying in the air and diverting them from various targets . . . . but that's never been confirmed.
Thank you for posting these additional details. The stories surrounding St. Pio are filled with extraordinary gifts and charisms, yet he remained a simple and humble servant.