The operational level links the tactical employment of forces to national and military strategic objectives through the planning and conduct of operations. The operational level of war is the art and science of winning campaigns. c) Tactical - (mostly Art) The tactical level focuses on planning and executing battles, engagements, and activities to achieve military objectives assigned to tactical units or task forces.
And that's what formed our moon. Why some planets have many moons is basically because of their size. The planets in our solar system that have more moons are the large planets, Jupiter, Saturn, Uranus and Neptune. They're so big that they can collect a lot of moon. If comets swing by them, they can sometimes absorb comets, they can grab asteroids.
Now, all mass exerts a gravitational force, and the tidal bulges on the Earth exert a gravitational pull on the Moon. Because the Earth rotates faster (once every 24 hours) than the Moon orbits (once every 27.3 days) the bulge tries to speed up the Moon, and pull it ahead in its orbit. The Moon is also pulling back on the tidal bulge of the Earth, slowing the Earth's rotation.