It's unknown why Guy gave the order, especially considering that none of the members of the six-man team ever listened to anything the man had to say.
It would do well for anyone that is currently reading this to remember that despite having a fierce loyalty to Guy, nighter Arturia or Isha ever stopped and listened to anything he had to say.
As for the Sargent and the other two members, none of them so much as entertained the man's words.
It is said that there is, in fact, a High chance that Arturia and Isha are Humans from a long lost age of Humanity, considering Guy's history of encountering strang and often dangerous artifacts.
One notable example is during a campaign when Unit was sent to deal with a Chaos invasion of an unknown Hive world, it's said by eyewitnesses, that Guy suddenly stood up and followed what he referred to as the singing voices of the past.
The results of this event, however, would cause a ripple effect that to this day s being felt by the wider Imperium.
Arturia, Isha, and Guy left their positions during active combat and were followed by the Sargent as well as several members of the Imperial Guard who had been ordered to execute the cowards for abandoning their position.
What occurred during the time they had been separated from the main teams, is unknown but what is known had left a long and impactful event in all those present.
Several Tytans of unknown design emerged, they were being piloted by the very guardsman that had been ordered to execute the cowards.
When interrogated everyone simply referred to the Tytans as Gundams, as Guy had said that that was what they once were called.
The weaponry, as well as the various metals used in the titans, is still being studied, as the metals and ceramics are known to actively repair themselves.
The control systems of the machines varied in design. as one is known to be able to be piloted by a person who simply sits down in a control panel and another puts on a tight skin suit and the titan copies the user's body movements.
Most disturbingly in all of this is that upon further investigation there were no traces of these machines ever having been hidden away where the guardsmen had led the teams.
Many would have said that the guardsmen had simply forgotten or outright lied about where they had found the titans, had the massive holes that perfectly fit the titan's bodies not been present.
Arturia is known as the rebellious daughter of the emperor however only by whispers and it isn't without merit, as Guy had been taken by the Sisters of Battle for interrogation, it's known that Guy refused to speak and give any details and the sisters began to use more and more violent methods.
Arturia did not tolerate this, a vide recording displayed a scene that few could imagine, as Artyura killed nearly twenty sisters single-handedly.