If you're a member of the U.S. navy, your organization is part of the department of

defense. To confirm this, you can follow these steps:

1. Open a web browser and go to the official website of the U.S. Navy.
2. Look for the "About" or "Organization" section on the website.
3. In that section, there should be information about the department or organization to which the U.S. Navy belongs.
4. The official website will likely state that the U.S. Navy is part of the Department of Defense (DoD).
5. You can also verify this information by searching for "U.S. Navy" and "Department of Defense" on reliable government or military-related websites.

By following these steps, you can find the confirmation that the U.S. Navy, as a member of the military forces, is part of the Department of Defense.