The Republic's war with the Seperatist has not been going well. Clones take time to grow, while battle droids are easily replaced. Every Republic victory is stymied by the difficulties of holding their territories with a limited number of soldiers and a seemingly endless number of contested worlds. As soon as one world is secured, another is attacked.
Since traditional warfare has failed, it is time to get drastic. The Republic has commissioned a special squadron of Clone Commandos trained specifically to work as a team with Jedi generals. The Special Tactics Group looks to bring unconventional war to the field, and perhaps snatch victory from the jaws of defeat...