BBY/ABY is used to position items along the Star Wars Timeline. BBY refers to Before the Battle of Yavin. ABY refers to After the Battle of Yavin. The Battle of Yavin in Episode IV: A New Hope occured in 0 BBY/ABY.
The Youtini Expanded Universe Ranking system is a 1-5 scale that ranks EU book quality, difficulty, and importance. Books closer to Level 1 are easier to read and understand, more important, and of higher quality.
On a mission with a Jedi general, one clone trooper contemplates his own worth as a copy of a great Mandalorian warrior. He has never been the best soldier, and as he learns about the Jedi and the power of the Force, he begins to feel that perhaps what has been setting him apart from the other clones is his own connection to the Force...
As the investigation progresses through a booby-trapped, abandoned Jedi Temple, this one clone will discover who he is and also see where he came from when the Mandalorian Death Watch suddenly appears.