Amnesia was started by Lester, HR, The Resistance and Captain Blood in the mid-1990s. For the few months prior to its founding these guys had previously all been members of the group Malice. But after a conflict with management specifically Dorian Hawkmoon the guys decided to walk, supposedly taking the best Malice people with them.

This was how it began, originally Rapier and Amnesia were nearly the same group, but it never panned out, thus spawning the later rivalry. Amnesia was rocky at the start, Captain Blood being named as a nark and becoming one of the more hated men in the scene at that time. He was removed from the Amnesia leadership and then it became just the three amigos. Amnesia quickly grew into a power.

Some of the better traders in the scene who were already in Malice, quickly moved over to the newer, less fucked up group. Lester quickly capitalized on this, picking up some of the better traders from smaller groups with a lot of potential. TSA, Yoss, Crazy, Aurora (MGD), Davan, Shafter. Two of the top sites at that time moved over to the group. BBX and CRC. The problem was simply that there was not enough loyalty to go around. RISC being highly threatened by Amnesia's emergence as a solid competitor began deleting traders who wouldn't quit, nuking them x2, doing whatever it took to take Amnesia out of the fold. So many traders would move to RISC, at the end of Amnesia, only Lester and Prozac were left from day one of Amnesia. But it was one hell of a ride. Amnesia dethroned RISC and removed the monopoly on sites that they had, also taking the BBS scene away from them as well. In the peak of Amnesia's days they were undisputedly #1 on BBS and NET. Having such BBSes as Street Spydrs, Malevolence, The Screwy Gecko, etc.

Amnesia linked up as Official Couriers for Pirates With Attitude, a task that has since not been accomplished. But Amnesia was not perfect; there were the incidents with Trite and Dreamland; Couriers leaving and trying to steal people; Gahn breaking off and forming Empire, a group war that amounts essentially to what Millennium and Dimension is right now. I just wanted to sum it up for you guys, included below is some quotes from people who were around or in Amnesia during its days. Also are some info files, I could not find the first info unfortunately.

Quoted by Lester, taken from NetMonkey Weekend Report #26.
There is an interview with Lester talking about Amnesia in Defacto2 #1.