When bees swarm, it is in response to other bees that emit pheromones as an alarm. Reptiles and mammals use their Jacobson's organ to sense pheromones. Elephants touch the tips of their trunks to this organ to enact their chemosensory perception of things.
During the American Revolution, the Continental Navy successfully preyed on British merchant shipping and won several victories over British warships. After being disbanded for several years, the United States Navy was formally established with the creation of the Department of the Navy in April 1798.
The Army, Navy, and Marine Corps were established in 1775, in concurrence with the American Revolution. The War Department was established in 1789, and was the precursor to what is now the Department of Defense.The Department of the Navy, was founded in 1798.The Coast Guard (part of Homeland Security in peacetime), can trace it's history back to 1790.Congress, in 1947, established a civilian, Cabinet-level Secretary of Defense to oversee an also newly created National Military Establishment.he Department of the Navy, was founded in 1798. The Coast Guard (part of Homeland Security in peacetime), can trace it's history back to 1790. Congress, in 1947, established a civilian, Cabinet-level Secretary of Defense to oversee an also newly created National Military Establishment.