------------------------------------------+------------+--------- | Produced. | Shipped | |Overseas. ------------------------------------------+------------+--------- 75-mm. guns (or British 18-pounder) | 970 | 181 3-inch and 75-mm. antiaircraft guns | 97 | [15]26 4.5-inch howitzers | 97 | 97 4.7-inch guns | 157 | 64 155-mm. (5-inch and 6-inch seacoast guns) | 121 |[16]114 155-mm. howitzers | 144 | 0 7-inch guns on caterpillar mounts | [17]10 | 0 Railway artillery | 20 | 11 Heavy howitzers | [18]418 | 322 +------------+--------- Total | 2,034 | 815 ------------------------------------------+------------+--------- [15] Does not include 51 improvised mounts for which guns were furnished by French. [16] Includes sixteen 155-mm. guns and carriages shipped without recuperators. [17] Built for the Marine Corps. [18] Includes sixteen 8-inch howitzers built for the Marine Corps. [Illustration: 1½-TON ANTIAIRCRAFT MACHINE GUN TRAILER.] [Illustration: TWO VIEWS OF THE 7-INCH NAVY RIFLE MOUNTED ON A PEDESTAL ON A RAILWAY CAR. This rifle has a range of about 10 miles and throws a projectile weighing 165 pounds. Note the means of loading and the depression angle.] CHAPTER IV. RAILWAY ARTILLERY. As soon as war was declared against Germany the Ordnance Department, in its search for an immediate equipment of strong artillery, surveyed the ordnance supplies of the country and discovered some 464 heavy guns which might be spared from the seacoast defenses, obtained from the Navy, or commandeered at private ordnance plants where they were being manufactured for foreign Governments. There were six guns of this last-named class--powerful 12-inch weapons which had been produced for the Chilean Government. It was seen that if all, or if a large part, of these guns could be made available for service in France, America would quickly provide for herself a heavy artillery equipment of respectable proportions. The guns thus available for mounting on railway cars ranged in size from the 7-inch guns of the Navy to the single enormous 16-inch howitzer which had been built experimentally by the Ordnance Department prior to 1917. The list of these guns according to number, size, length, and source whence obtained was as follows: