In military structure, what does RADM stand for?

RADM stands for Rear Admiral, which is a senior rank in naval services. It signifies an officer who typically commands a naval group or task force and is responsible for significant leadership roles within the navy. The rank itself is part of a structured hierarchy and is above the rank of Captain and below Vice Admiral.

In many navies, including the U.S. Navy, Rear Admirals are often involved in high-level decision-making processes, strategic planning, and operational management. The term "Rear" refers to the position behind the leadership lines, differentiating it from higher ranks such as Vice Admiral and Admiral.

The other terms do not accurately describe a recognized naval rank. Registered Admiral, Radial Admiral, and Reserve Admiral either do not exist in the context of naval ranks or are not commonly used to represent an official designation within military structures. This clarity reinforces the understanding of leadership structure within naval forces, linking the terminology directly to its operational significance.