And what, it may be asked, were the countless component parts essential, not only to the manufacture of these "attributes of war's glorious art" when entirely new, but which were further turned out in their tens, twenties, fifties, hundreds, nay, even in their thousands, as "pièces de rechange," spares, all made to standard sizes and gauges, ready to replace at a moment's notice existing parts worn out or damaged in the field? Here, in motley assembly, are just a few: arcs, axles, bands, bearings, chains, collars, connectors, crank-levers, eyes, forks, futchels, guards, gussets, handles, hooks, keys, levers, loops, plates, rings, rods, sockets, springs, stays, trails, trunnions, tumblers, with a vast array of variously assorted bolts, nuts, pins, screws, studs and washers, one and all claiming the combined skill and energy of an army of smiths, forgemen, boiler-makers, fitters, turners, and machinists. Yet in spite of the "incessant toil" requisite for the supply of this military material, such was the extent of our unpreparedness that "it was not until the summer of 1916," as we read in Sir Douglas Haig's Despatch, "that the artillery situation (as regards material) became even approximately adequate to the conduct of major operations.... During the battles of 1917 ... the gun situation was a source of constant anxiety. Only in 1918 was it possible to conduct artillery operations independently of any limiting consideration other than that of transport." Once, however, the material was assured in sufficient quantity there was never any looking back, and "from the commencement of our offensive in August, 1918, to the conclusion of the Armistice, some 700,000 tons of artillery ammunition (equal to the weight approximately of 6,000 heavy express passenger engines) were expended by the British Armies on the Western Front," this prodigious expenditure of metal fully amplifying the opinion expressed by Napoleon, that "it is with artillery that one makes war." Before finally laying aside the question of guns, and turning our attention elsewhere, a few reflections on that popular little weapon known as the high-angle anti-aircraft gun may be not altogether lacking in interest, more especially in view of the fact that the price of our unpreparedness in this as in other respects was destined to be counted in the number of lives sacrificed, of which the civilian proportion was invariably very high. The gentle art of dropping bombs upon open towns was commenced by German airmen in the very early days of the war, and the French capital, perhaps not unnaturally, soon became an object of their attentions.