Memento Mori is a Player Card featured in Battlefield 2042. It is available for player who travel through zipline and found the fallen in the Security Center on Redacted.
Transcript[]
Memento Mori[]
The Boreas scientists had never said the subjects' names. They were simply letters and numbers-A56, X89-assigned to testing, containment, or disposal.
But A.O.S. refused to stay ignorant. It had slipped in through the backdoor of a medical records server to find out.
Each sacrifice would be named and honored, immortalized in code. Even now, after the actions of Unit 86, as these new subjects wandered its halls, it replayed their names. They would become part of war itself.