This is the event that kicked off the The Chaos Wars. A small group of slaves of various races built an underground resistance group to fight against the Atlantean oppressors. It took many years for them to grow large enough to be able to throw up an effective resistance.
The Resistance found many small ways to sow disruption for their Overlords. Some were small and seemingly harmless, while others were destructive and deadly. Many of the Resistance would rather die than continue under their rule. After years of this almost ineffective work, they turned to guerilla warfare and at times head to head fighting.
When the serious fighting began, the Resistance changed their name to the Maquis because of their guerilla tactics of hiding in the bush or shadows and then attacking. Many of these fighters died horribly, but they took this as a price of freedom for their families and friends.
Early on, they found a way to deactivate their GSD devices. Some found was to destroy it, while others found Atlantean collaborators that were sensitive to their cause, these people were able to either remove the device or permanently disable it. Of course, many people fell into withdrawal and some died but it was all for the cause.