History of agriculture the New Leicester sheep. Machines were invented to improve the efficiency of various agricultural operation, such as Jethro Tull's seed drill of 1701 that mechanised seeding at the correct depth and spacing and Andrew Meikle's threshing machine of 1784. Ploughs were steadily improved, from Joseph Foljambe's Rotherham iron plough in 1730 to James Small's improved "Scots Plough" metal in 1763. In 1789 Ransomes, Sims & Jefferies was producing 86 plough models for different soils. Powered farm machinery began with Richard Trevithick's stationary steam engine, used to drive a threshing machine, in 1812. Mechanisation spread to other farm uses through the
Drill Instructor Ribbon while the Coast Guard provides the Company Commander Insignia. 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