| image =
| nickname =
| parent formation = Andurien Cavalry
| formed =
| year = 3137
A Military unit which served [[Duchy of Andurien]] during the post-Jihad era and [[Dark Age]] eras.
They are primary a Anti- Pirate force, with glorifed name, stationed on [[El Giza]] as par effort to fight off pirates. They can call for assistiance by the [[2nd Andurien Guard]] stationed on [[Mosiro]] and via versa.
The 4th fought the 1st Covenant Worlds Expeditionary Force in June, 3137 during the [[5th Andurien War|Andurien War against Oriente]] .<ref>[[To Ride the Chimera]] pg. 186 - nickname revealed</ref> The unit dug in and fought hit and run war, instead of falling back to their large sister unit on Mosiro. They were using the tall grasslands of planet and hidden ravines to fight Expedition's heavier forces. Using hidden bases, they successfully harassed the units instead of fall back off planet to Mosiro to join the 2nd Andurien Guard. The unit bought time, being destroyed in piecemeal so its sister unit on Mosiro could be extra week of preparation for the Oriente forces. Using the ruins of ancient city's, the 4th pop in and out from various places in the plains.
Hit and Fade Tactics, intercepting fast enemy units.
The unit is a Heavy Mixed Company , consisting of light, fast machines fitted out to fight raiders. The unit consists of include light & medium Battlemechs.