“At every one of the passes--including the one of the cart-road--a half-dozen good rock-rollers, with plenty of ‘ammunition,’ could put the kibosh on an army, and you may bet we saw to it that there was no shortage of pebbles on hand. For the first week or two my fingers were worn pretty near to the bone from handling rocks. The only way the Austrians could have got the best of us, once we had made ourselves at home, would have been with not less than a dozen regiments of their Kaiser Jaeger, mountain batteries and all; but by the time this fact sunk into them the Italians were keeping them so busy that they probably figured they couldn’t spare any such number of Alpine troops for side-shows. Anyhow, they never even gave us a good run for our money in the way of attacks, though of course some of the raiding parties came in for pretty bad punishings every now and then. “The one thing that we needed most, first and last, was dynamite. If we could have got hold of even half a ton of it in the first month or two, before the Austrians got their patrols organised, we could have done no end of harm in blowing up bridges and tunnels where they had been missed in the rush of the retreat, and upsetting communications generally. When we finally did begin to get hold of powder, all the danger-points were so heavily guarded that we never got a fair chance at them. Once, with fifty men armed with knives, we rushed the guard at an important bridge and cleaned up the lot before a shot was fired. But something must have been wrong with the fuse or caps, for the dynamite placed under the near abutment never exploded, and there wasn’t time to go back and do the job over. The next time we tried the same tactics it was on a tunnel, but here they had an ambush ready, and only about a dozen of the hundred men who were in the raid ever came back. The smoothest piece of tunnel work ever brought off was not done by our gang at all, but by a much smaller one that worked in the region of Uskub for a while, led by a Serbian Intelligence Officer from Salonika who had been dropped there a month before from an aeroplane. They descended into a very important pass in broad daylight, seized a train of empty freight cars that was waiting on a siding for a south-bound troop-train to go by, held it until a signal arranged for in advance told them the troop-train was entering the north end of the longest tunnel in that part of the country, and then turned the freight loose into the other end. We had word later that never a man was brought out alive, but the best effect of the job was its setting afire the lime rock in the heart of the mountain and the blocking of traffic for many months.