After liberating Templar Dens, and whenever you have spaces free in your Mediterranean Defense roster, Recruit Assassin markers will appear in areas under Assassin control.

There are two types of potential Recruit Assassin scenarios: six short Secondary Memories (covered here) that tell the stories of individual Recruits and count towards the 100% Synch rating, and “generic” enlisting opportunities where you will find a prospective Recruit confronted by Templars. If you can kill these aggressors and save the citizen, they will automatically pledge themselves to the Assassin cause.

All Recruit Assassins Memories are technically available from the end of Sequence 03, Memory 03, though you will also need to capture Templar Dens in each region to unlock them (with the exception of The Avenger, which appears automatically in the Galata district after you conquer the first Templar Den of your own choosing). There is a Recruit Assassins Memory to play in each region with the exception of the Imperial North and Arsenal districts.

Completing Recruit Assassins Memories will cause “generic” recruiting sites to spawn in the surrounding region.

There are only Templar Awareness penalties for recruiting Assassins from generic recruitment sites: Recruit Assassins Memories only contribute small increments based on your actions in combat.

The starting rank and weapon of the Assassin you receive is random, though the game code will take steps to ensure that you get a good balance of different weapon specialists.