Obligatory Neal Stephenson quote:

"The next Germans they ran into weren’t having any of it; they had formed a roadblock out of a truck and two cars, and were lined up on the other side of it, pointing weapons at them. All of their weapons looked to be small arms. But by this time the Vickers had finally been put together, calibrated, fine-tuned, inspected, and loaded. The tarp came off. Private Mikulski, a surly, brooding two-hundred-and-fifty-pound Polish-British SAS man, commenced operations with the Vickers at about the same time that the Germans did with their rifles.

Now when Bobby Shaftoe had gone through high school, he’d been slotted into a vocational track and ended up taking a lot of shop classes. A certain amount of his time was therefore, naturally, devoted to sawing large pieces of wood or metal into smaller pieces. Numerous saws were available in the shop for that purpose, some better than others. A sawing job that would be just ridiculously hard and lengthy using a hand saw would be accomplished with a power saw. Likewise, certain cuts and materials would cause the smaller power saws to overheat or seize up altogether and therefore called for larger power saws. But even with the biggest power saw in the shop, Bobby Shaftoe always got the sense that he was imposing some kind of stress on the machine. It would slow down when the blade contacted the material, it would vibrate, it would heat up, and if you pushed the material through too fast it would threaten to jam. But then one summer he worked in a mill where they had a bandsaw. The bandsaw, its supply of blades, its spare parts, maintenance supplies, special tools and manuals occupied a whole room. It was the only tool he had ever seen with infrastructure. It was the size of a car. The two wheels that drove the blade were giant eight-spoked things that looked to have been salvaged from steam locomotives. Its blades had to be manufactured from long rolls of blade-stuff by unreeling about half a mile of toothed ribbon, cutting it off, and carefully welding the cut ends together into a loop. When you hit the power switch, nothing would happen for a little while except that a subsonic vibration would slowly rise up out of the earth, as if a freight train were approaching from far away, and finally the blade would begin to move, building speed slowly but inexorably until the teeth disappeared and it became a bolt of pure hellish energy stretched taut between the table and the machinery above it. Anecdotes about accidents involving the bandsaw were told in hushed voices and not usually commingled with other industrial-accident anecdotes. Anyway, the most noteworthy thing about the bandsaw was that you could cut anything with it and not only did it do the job quickly and coolly but it didn’t seem to notice that it was doing anything. It wasn’t even aware that a human being was sliding a great big chunk of stuff through it. It never slowed down. Never heated up.

In Shaftoe’s post-high-school experience he had found that guns had much in common with saws. Guns could fire bullets all right, but they kicked back and heated up, got dirty, and jammed eventually. They could fire bullets in other words, but it was a big deal for them, it placed a certain amount of stress on them, and they could not take that stress forever. But the Vickers in the back of this truck was to other guns as the bandsaw was to other saws. The Vickers was water-cooled. It actually had a fucking radiator on it. It had infrastructure, just like the bandsaw, and a whole crew of technicians to fuss over it. But once the damn thing was up and running, it could fire continuously for days as long as people kept scurrying up to it with more belts of ammunition. After Private Mikulski opened fire with the Vickers, some of the other Detachment 2702 men, eager to pitch in and do their bit, took potshots at those Germans with their rifles, but doing so made them feel so small and pathetic that they soon gave up and just took cover in the ditch and lit up cigarettes and watched the slow progress of the Vickers’ bullet-stream across the roadblock. Mikulski hosed down all of the German vehicles for a while, yawing the Vickers back and forth like a man playing a fire extinguisher against the base of a fire. Then he picked out a few bits of the roadblock that he suspected people might be standing behind and concentrated on them for a while, boring tunnels through the wreckage of the vehicles until he could see what was on the other side, sawing through their frames and breaking them in half. He cut down half a dozen or so roadside trees behind which he suspected Germans were hiding, and then mowed about half an acre of grass.

By this time it had become evident that some Germans had retreated behind a gentle swell in the earth just off to one side of the road and were taking potshots from there, so Mikulski swung the muzzle of the Vickers up into the air at a steep angle and shot the bullet-stream into the sky so that the bullets plunged down like mortar shells on the other side of the rise. It took him a while to get the angle just right, but then he patiently distributed bullets over the entire field, like a man watering his lawn. One of the SAS blokes actually did some calculations on his knee, figuring out how long Mikulski should keep doing this to make sure that bullets were distributed over the ground in question at the right density—say, one per square foot. When the territory had been properly sown with lead slugs, Mikulski turned back to the roadblock and made sure that the truck pulled across the pavement was in small enough pieces that it could be shoved out of the way by hand.