A German officer who visited the Alpine battle sites after the armistice remarked that the Blitzkrieg tactics that had served Germany well in northern France would have been difficult in the Alpine terrain, which has been called perhaps the most unsuitable of all conceivable theatres of operation. The attack through the Little Saint Bernard Pass in the Alps also stalled on the first day due to a massive snow storm. Italian troops stuck in the snow were easy targets for French snipers and the winding mule trails provided plenty of opportunity for SES squads to lay ambushes. The snow also hampered the movement of artillery, food and ammunition to the summits. Richard Carrier emphasised the leadership of General Olry, that it was his leadership and autonomy from the dithering politicians in Paris that allowed him, his staff and his officers to demonstrate remarkable efficiency in checking the Italian advance and the German attempt down the Rhone as well.