The 300 Jedi's Last stand occurred in 18.5BBY and five days, as tens of thousands of stormtroopers and even the recently crowned Darth Vader himself moved in to kill the largest order remnant actively opposing the Empire. Many Jedi survived, but many were also killed in the largest attempted execution of Order 66 since the attack on the Jedi Temple and the galaxy-wide Jedi killings six months earlier.