Verdun's Mightiest Defender: a 400-mm. Gun.[ToList]
This was the great 16-inch weapon with which the French so pounded Fort Douaumont as to cause its evacuation by the Germans.
A Gun Painted to Escape the Observation of Enemy Airmen.[ToList]
"So streaked and striped and splashed and mottled with many colors was it that, monster though it was, it escaped my notice until we were almost upon it."
Some idea may be had of the variety of artillery in use on the French front when I mention that there are at least eleven calibers of guns, howitzers, and mortars, ranging in size from 9 inches to 20.8 inches, in action between Switzerland and the Somme. All of these, with a very few exceptions, are mounted on railway-trucks. In fact, the only large calibered piece not thus mounted is the Schneider mortar, a very efficient weapon, having a remarkably smooth recoil, which has a range of over six miles. It is transported, with its carriage and platform, in six loads, each weighing from four to five tons, about four hours being required to set up the piece ready for firing. Nearly all of these railway guns are, I understand, naval or coast-defense pieces, some of them being long-range weapons cut down to form howitzers or mortars, while others have been created by boring to a larger caliber a gun whose rifling had been worn out in use. For example, the 400-millimetre, already referred to as having proved so effective against Douaumont, was, I am told, made by cutting down and boring out a 13.6-inch naval gun. But the master gun, the very latest product of French brains and French foundries, is the huge 520-millimetre (20.8-inch) howitzer which has just been completed at the Schneider works at Creusot. This, the largest gun in existence, has a length of 16 calibers (that is, sixteen times its bore, or approximately 28 feet), and weighs 60 tons. It fires a shell 7 feet long, weighing nearly 3,000 pounds, and carrying a bursting charge of 660 pounds of high explosive. Its range is 18 kilometres, or a little over eleven miles, though this can probably be increased if desired. This is France's answer to the German 42's, and, just as the latter shattered the forts of Liége, Antwerp, and Namur, so these new French titans will, it is confidently believed, humble the pride of Metz and Strasbourg.
So insistent has been the demand from the front for big guns, and yet more big guns, that new batteries are being formed every day. Generally speaking, the French plan is to assign short-range howitzers and mortars to the division; the longer range, horse-drawn guns—hippomobile the French designate them—to the army corps; while the tractor-drawn pieces and those mounted on railway-carriages are placed directly under the orders of the chief of artillery of each army.