What is the name of the flag used by the Navy to signify a specific purpose?

The name of the flag used by the Navy to signify a specific purpose is indeed the Navy Jack. This flag has historical significance and serves as a symbol of the naval forces of the United States. The Navy Jack is recognized for featuring 13 alternating stripes of red and white, with a blue field in the canton that contains 50 white stars, representing the states of the Union.

The Navy Jack is often flown in specific contexts to represent the Navy's readiness and capability to engage in operations. Its usage can signal a variety of missions and is an important part of naval tradition. Understanding the Navy Jack's purpose helps cadets appreciate the symbolic nature of naval flags and their importance in naval operations and ceremonies.

Other flags mentioned, like the Service Flag, War Ensign, and Admiral's Flag, have distinct roles and uses, often pertaining to different aspects of representation or command within the naval structure. However, it is the Navy Jack that specifically signifies the readiness and active status of the Navy, making it the relevant choice for the question posed.