What is Michael Garibaldi's rank on Babylon 5?

Question

The Earth Force Military tends to mix-and-match their ranks, but they're generally recognizable:

• Sinclair is a Commander
• Sheridan is a Captain
• Ivonava starts as a Lt. Commander and is promoted to Commander
• Franklin's father is a General
• Krantz is a Major

and so on. We see that Garibaldi is in EarthForce and must therefore have a rank, but he's only ever referred to as "Security Chief", which is his position.

What rank does he hold?

Answer 1

Michael's EarthForce rank is Chief Warrant Officer.

Sheridan: This is Captain John J. Sheridan. Serial number XO7Y39-Alpha. Security code: obsidian.

Ivanova: This is Commander Susan Ivanova. Serial number Z48M27-Epsilon. Security code: griffin.

Michael Garibaldi: This is Chief Warrant Officer Michael Garibaldi. Serial number V17L98. Security code: peekaboo.

_{^{Ceremonies of Light and Dark}}

Answer 2

He holds the rank of Chief Warrant Officer for the first four seasons. Then he works as Director of Covert Intelligence for the Interstellar Alliance.