Alexsandr Kallus' first Imperial platoon

Kallus and his platoon was sent to Onderon to bring peace to the world, suggesting the Empire had no intention of killing anyone, only to bring peace. On a routine patrol the platoon run into a rebel, a Lasat mercenary who worked for Saw Gerrera Kallus was knocked out by the first blast, he woke up from it but couldn't move. The Lasat then calmly walked through the smoke, finishing of the rest of the platoon one by one. The ones injured in the platoon never had a chance. Since then Kallus has always wondered why the Lasat let him live.