Conducting joint operations involves how many broad principles?

There are 12 principles: 9 classical principles of war and 3 modern caveats:

1. Objective

2. Offensive

3. Mass

4. Economy of Force

5. Maneuver

6. Unity of Command

7. Security

8. Surprise

9. Simplicity

10. Restraint

11. Perseverance

12. Legitimacy

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Conducting joint operations is generally a very systematic exercise that requires cooperation from each department involved. These usually include State, Department of Defense, Homeland Security, the FBI and the President's Office.

The most common principle in joint operation is the use of combined arms to achieve a common end such as fighting terrorism. Lives and resources can be saved when some things are done under joint operations that will share intelligence.