some from Navy spares), 129 10-inch guns, 45 12-inch guns, and 150 12-inch mortars could be spared from fixed coast defense batteries or spare stocks. Twelve 7-inch ex-Navy guns and six 12-inch guns being built for Chile were also available. To shorten a long story, none of these weapons were shipped to France except three 8-inch guns, as few of any type were completed before the Armistice. Forty-seven 8-inch railway guns were ordered, with 18 completed by the Armistice and a total of 37 (or 47, references vary) completed before the contract was canceled. Eight 10-inch railway mounts of 54 ordered were completed by the Armistice, and twelve 12-inch railway mounts were completed by 1 April 1919; the 12-inch contract was cancelled at that point. At least some of the 10-inch gun barrels were shipped to France and mounted on French-made carriages, but sources do not indicate any use of them in combat. Three railway mountings for the Chilean 12-inch guns were ready for shipment by the Armistice, and the remaining three barrels were kept as spares. A total of twenty-two 10-inch guns were eventually mounted. Ninety-one 12-inch railway mortars were ordered, with 45 complete by 7 April 1919 and the remainder eventually completed. The 7-inch and 8-inch guns and 12-inch mortars used a common carriage, with a depressed center and two 4-wheel or 6-wheel bogies. The bogies were interchangeable for standard-gauge or (with 12-wheel bogies) 60-cm (23.6-inch) gauge track. Outriggers and a rotating mount allowed all-around fire. This allowed the weapons to be used in coast defense against moving targets. The 8-inch guns and 12-inch mortars were kept on railway mountings after the war, while almost all of the 7-inch, 10-inch, and 12-inch guns were returned to the coastal forts. With 47 available, plus an additional 24 ex-Navy Mark VI guns on railway mounts by 1942, the 8-inch guns were the most-commonly-deployed American railway gun through World War II. About 12 of these were used for the defense of Oahu, Hawaii. Others were stationed for the coastal defense of Manila (eventually dismounted from the railway carriage at Corregidor), Bermuda, Newfoundland, Puget Sound, Chesapeake Bay, Delaware Bay, and Fort Hancock, New Jersey (near New York City). Although numerous 12-inch railway mortars were available, few were deployed. In 1930 the US Army tested them at Fort Hancock, New Jersey, and Fort Miles, Delaware. During World War II, four railway mortars were