66th Squadron

The 66th Squadron was the least useful Clone Squadron to ever exist.

The Clone Wars
At the start of the Clone Wars the 66th Squadron was put under the command of Jedi Bob, the greatest Jedi to exist. They quickly proved themselves unworthy of that honor in their first battle together, the Battle of Stewjon, where they engaged General Grievous and his clanker army. Jedi Bob single-handedly won the battle, critically injuring Grievous and annihilating his forces, and only a single shot was fired by any of the troopers of the 66th Squadron, and it, rather then towards a droid, Grievous, or another being with hostile intent, was directed towards one of Stewjon's native butterflies by a clone with an intense case of lepidopterophobia.

After the Battle of Stewjon, the 66th Squadron was replaced by a single clone trooper, JF-6666, better known as Sixes.

It is unknown what happened to them after being replaced. Presumably, they served under another, significantly less great, Jedi General and later executed Order 66.

Trivia

 * The 66th Squadron was the largest squadron in the army of the Galactic Republic, with a total of 66 members.
 * The 66th Squadron was the least useful Clone Squadron to ever exist.