Seed drill further refined by Jethro Tull in 1701 in the Agricultural Revolution. However, seed drills of this and successive types were both expensive and unreliable, as well as fragile. Seed drills would not come into widespread use in Europe until the mid to late 19th century, when manufacturing advances such as machine tools, die forging and metal stamping allowed large scale precision manufacturing of metal parts. Early drills were small enough to be pulled by a single horse, and many of these remained in use into the 1930s. The availability of steam, and later gasoline tractors, however, saw the development of
Foot drill Troops who are new to drill are unconfident and tend to panic or become confused when new commands are introduced. Troops who do lots of drill can more easily be taught new formations, building off the base of experience previously garnered. In a period when all war was foot drill, this could obviously prove an advantage. As an example, the British used an unorthodox two rank line during the later 18th and early-to-mid 19th Centuries as a force multiplier. In the Peninsular Campaign they were able to adapt this formation from strictly linear to a shallow crescent. Moving from a