Which birthday is associated with the date 13 October, 1775?

The date 13 October 1775 is significant because it marks the founding of the United States Navy. This date is recognized as the Navy Birthday, commemorating the establishment of the Continental Navy by the Continental Congress. The Navy was created to serve during the American Revolutionary War, and over the years, it has evolved into the crucial maritime military force of the United States.

The other options, while significant in their own right, do not correspond to this specific date. The Army Birthday is observed on 14 June 1775, marking the establishment of the Continental Army. The Marine Corps Birthday is celebrated on 10 November 1775, when the Continental Marines were formed. The Space Force, being a more recent branch of the military, was established on 20 December 2019 and therefore does not have a birthday that correlates with the year 1775. Thus, the Navy Birthday is the only correct association with the date in question.