Mechanization in 1801, displacing the centuries-old hand method of making individual sheets of paper. One of the first mechanical devices used in agriculture was the seed drill invented by Jethro Tull around 1700. The seed drill allowed more uniform spacing of seed and planting depth than hand methods, increasing yields and saving valuable seed. Mechanized agriculture greatly increased in the late eighteenth and early nineteenth centuries with horse drawn reapers and horse powered threshing machines. By the late nineteenth century steam power was applied to threshing and steam tractors appeared. Internal combustion began being used for tractors in the early twentieth
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