Domino Squad was a military unit of clone trooper cadets stationed on the planet Kamino during the Clone Wars. The members of the squad, at first, proved unable to effectively work together as a team, but they ultimately passed their tests on Kamino and became full members of the Grand Army of the Republic.
After graduation, they were stationed at Rishi Station on the Rishi moon, a strategic point on route to Kamino. The majority of Domino Squad died during a Separatist attack on the base. The survivors CT-1409 and CT-5555 were subsequently absorbed into the 501st Legion.