History of the horse in Britain drawn by two horses, the "Dutch plough", was used in eastern England; this was followed in 1730 by the lightweight Rotherham plough, an unwheeled, or "swing" plough. It was advertised as reducing ploughing times by a third, or using a third less horsepower for the same ploughing time. The improved seed drill and horse-hoe were invented by Jethro Tull in 1731; but it took more than 100 years for these designs to come into common use. The earliest horse-powered threshing machines, which were installed permanently in barns, were developed towards the end of the 18th century. The use of fast
Exhibition drill a person crosses a boundary line. Some high-school level competitions prevent cadets who are participating in armed drill events from performing more dangerous 'over the head' spins, or raising cadets off the floor, in the interest of safety. Some high school drill teams compete at the National High School Drill Team Championships in Daytona Beach, Florida, and generally use demilitarized Springfield M1903s, M1 Garands, M-14 rifles and Daisy Drill Rifles. Certain teams at the NHSDTC who receive high placings end up being well known on a national level. There are also national levels for JROTC divisions nationwide. There is the