Survive the clone war as a Clone! You are a soldier of the great republic, and you are part of the 501st. Legion!

Commander Rex: Welcome, Soldier!

Fives: I'm Arc Trooper 5555, Greetings, Brother.

Kix: I'm the Medical Trooper from this Legion...

Anakin Skywalker: Hello, Soldier. My name is Anakin, and I'm the Jedi General of this Legion! You can call me General Skywalker!

These are the main Units of the 501st.