Which military branch operates in conjunction with the Navy for joint operations?

The Marine Corps operates in conjunction with the Navy for joint operations due to their longstanding integration and cooperative missions. Established as a part of the Department of the Navy, the Marine Corps is often the first force on the ground in engagements, with the Navy providing essential logistical support and transportation.

During amphibious operations, for example, the Navy provides the necessary naval support, such as air and sea lift capabilities, while the Marines execute ground operations. This unique relationship allows for swift and effective responses during conflicts, illustrating the synergistic effect of their collaboration.

Although the other branches, like the Army, Air Force, and Coast Guard, can and do collaborate with the Navy in various operations, the Marine Corps is specifically designed to operate with the Navy, emphasizing their combined capabilities and mission focus.