Question: In which conflict was the inventor of the first modern dishwasher in England in 1924?

full_context: Document 1: Washing machine: Bendix Home Appliances, a subsidiary of Avco, an otherwise unrelated company, who licensed the name from Bendix Corporation, introduced the first domestic automatic washing machine in 1937, having applied for a patent in the same year. In appearance and mechanical detail, this first machine was not unlike the front loading automatic washers produced today. Although it included many of the today's basic features, the machine lacked any drum suspension and therefore had to be anchored to the floor to prevent ``walking ''. Because of the components required, the machine was also very expensive. For instance, the Bendix Home Laundry Service Manual (published November 1, 1946) shows that the drum speed change was facilitated by a 2 - speed gearbox built to a heavy duty standard (not unlike a car automatic gearbox, albeit at a smaller size). The timer was also probably fairly costly, because miniature electric motors were expensive to produce.
Document 2: Fire extinguisher: The modern dry powder fire extinguisher was invented by British Captain George William Manby in 1818; it consisted of a copper vessel of 3 gallons (13.6 liters) of pearl ash (potassium carbonate) solution contained within compressed air.
Document 3: William Armstrong, 1st Baron Armstrong: William George Armstrong, 1st Baron Armstrong (26 November 1810 – 27 December 1900) was an English engineer and industrialist who founded the Armstrong Whitworth manufacturing concern on Tyneside. He was also an eminent scientist, inventor and philanthropist. In collaboration with the architect Richard Norman Shaw, he built Cragside in Northumberland, the first house in the world to be lit by hydroelectricity. He is regarded as the inventor of modern artillery.
Document 4: Hair dryer: Around 1915, hair dryers began to go on the market in handheld form. This was due to innovations by National Stamping and Electricworks under the white cross brand, and later U.S. Racine Universal Motor Company and the Hamilton Beach Co., which allowed the dryer to be small enough to be held by hand. Even in the 1920s, the new dryers were often heavy, weighing in at approximately 2 pounds (0.9 kg), and were difficult to use. They also had many instances of overheating and electrocution. Hair dryers were only capable of using 100 watts, which increased the amount of time needed to dry hair (the average dryer today can use up to 2000 watts of heat).
Document 5: Livens Large Gallery Flame Projector: Livens Large Gallery Flame Projectors were large experimental flamethrowers used by the British Army in World War I, named after their inventor, Royal Engineers officer William Howard Livens.
Document 6: Hair dryer: Blow dryers were invented in the late 19th century. The first model was created by Alexander F. ``Beau ''Godefroy in his salon in France in 1890. The handheld, household hair dryer first appeared in 1920. Blow dryers are used in beauty salons by professional stylists and in the household by consumers.
Document 7: Washing machine: Electric washing machines were advertised and discussed in newspapers as early as 1904. Alva J. Fisher has been incorrectly credited with the invention of the electric washer. The US Patent Office shows at least one patent issued before Fisher's US patent number 966677 (e.g. Woodrow's US patent number 921195). The ``inventor ''of the electric washing machine remains unknown.
Document 8: Pub: "Whereas their Majesties have been Graciously Pleased to grant Letters patent to John Lofting of London Merchant for a New Invented Engine for Extinguishing Fires which said Engine have found every great encouragement. The said Patentee hath also projected a Very Useful Engine for starting of beer and other liquors which will deliver from 20 to 30 barrels an hour which are completely fixed with Brass Joints and Screws at Reasonable Rates. Any Person that hath occasion for the said Engines may apply themselves to the Patentee at his house near St Thomas Apostle London or to Mr. Nicholas Wall at the Workshoppe near Saddlers Wells at Islington or to Mr. William Tillcar, Turner, his agent at his house in Woodtree next door to the Sun Tavern London."
Document 9: PIAT: The Projector, Infantry, Anti Tank (PIAT) Mk I was a British man-portable anti-tank weapon developed during the Second World War. The PIAT was designed in 1942 in response to the British Army's need for a more effective infantry anti-tank weapon and entered service in 1943.
Document 10: Tanks in World War I: In Great Britain, an initial vehicle, nicknamed Little Willie, was constructed at William Foster & Co., during August and September 1915. The prototype of a new design that became the Mark I tank was demonstrated to the British Army on February 2 1916. Although initially termed ``Landships ''by the Landship Committee, production vehicles were named`` tanks'', to preserve secrecy. The term was chosen when it became known that the factory workers at William Foster referred to the first prototype as ``the tank ''because of its resemblance to a steel water tank.
Document 11: Toilet (room): Indoor toilets were at first a luxury of the rich and only gradually spread to the lower classes. As late as the 1890s, building regulations in London did not require working - class housing to have indoor toilets; into the early 20th century, some English homes were built with an upstairs toilet for use by the owners and an outhouse for use by the servants. In some cases, there was a transitional stage where toilets were built into the house but accessible only from the outside. After World War I, all new housing in London and its suburbs had indoor toilets.
Document 12: Thomas Crapper: The flushing toilet was invented by John Harington in 1596. Joseph Bramah of Yorkshire patented the first practical water closet in England in 1778. George Jennings in 1852 also took out a patent for the flush - out toilet. In a time when bathroom fixtures were barely spoken of, Crapper heavily promoted sanitary plumbing and pioneered the concept of the bathroom fittings showroom.
Document 13: Dishwasher: In the United Kingdom, William Howard Livens invented a small, non-electric dishwasher suitable for domestic use in 1924. It was the first dishwasher that incorporated most of the design elements that are featured in the models of today; it included a front door for loading, a wire rack to hold the dirty crockery and a rotating sprayer. Drying elements were even added to his design in 1940. It was the first machine suitable for domestic use, and it came at a time when permanent plumbing and running water in the house was becoming increasingly common.
Document 14: Levavasseur project: The Levavasseur project was an early project for a tank designed in 1903 by the French Captain Léon René Levavasseur (1860-1942) of the 6th Artillery Battalion, described as a "self propelled cannon project" (French: "Projet de canon autopropulseur"). It is considered as the first description, made by a soldier, of what would come to be known as the tank. Levavasseur was a graduate of Ecole Polytechnique, of the promotion of 1881. According to "Armoured Fighting Vehicles of the World":
Document 15: Water engine: A prerequisite for the correct function of the water engine was sufficient pressure in the water pipes. In times of high water consumption (before or after work) the water pressure was often insufficient. In hard winters, in which the water pipes often froze, the water engine could not be used. For these reasons the washing machines still had a device that enable them to be rotated by 'muscle power'.
ground_truth: World War I
sub_queries: who invented the first modern dishwasher in 1924 in england Answer: William Howard Livens
William Howard Livens >> conflict Answer: World War I