I agree!Here's a thread on the topic:
How did your rescue get started? - GermanShepherdHome.net
Here are two lists of GSD rescues (constantly changing, so never utd):
Lists of GSD rescue organiations - GermanShepherdHome.net
If you are new to rescue, and there is no GSD rescue in your wider area, I'd start by joining an all breed rescue and eventually become their GSD person, or volunteer at your local shelter, and learning the ropes.
To operate a successful rescue organization takes money, knowledge, many different skills, experience in a wide range of fields, and a team of people.
It's great that you are planning to DO and ACT in rescue! Welcome aboard!