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
Drill Instructor Ribbon Drill Instructor Ribbon A Drill Instructor Ribbon is a military award of the United States Armed Forces which is issued by the U.S. Navy, U.S. Air Force and U.S. Marine Corps. The Drill Instructor Ribbon recognizes those service members who are trained and qualified as military instructors to new recruits during initial basic training. The U.S. Marine Corps Drill Instructor Ribbon was created in July 1997 and recognizes those members of the United States Marine Corps who have successfully trained and qualified as Marine Corps Drill Instructors. To qualify, a Marine must hold the Military Occupational Specialty (MOS) of 0911