If you are a beginner, I recommend studying just the required liaisons and maybe the forbidden liaison sections, as these are the essentials. 1  If you're more advanced, study all three sections. It may be boring, but your pronunciation and ability to communicate at different levels of formality will improve dramatically.
The United States Navy claims 13 October 1775 as the date of its official establishment, when the Second Continental Congress passed a resolution creating the Continental Navy. With the end of the American Revolutionary War, the Continental Navy was disbanded.
While the Marines was constitutes at the same time as the Navy in 1775, mainly to secure a landing force for the Navy, they were made a separate force in 1798 through a special act of the parliament in 1798. However, since 1834, Marines has been a component of the US Department of Navy.