What is the common road to getting into the field of becoming a retirement tax advisor?

Question

advisors who protect retirement savings by minimizing their clients/prospects tax burdens. i.e. - legally sheltering monies as long as possible; allowing monies to pass from generation to generation.

Answer 1

good advice above

other routes are stock brokers and attorneys

There are programs for Certified Financial Planners, would recommend those also

Answer 2

Accounting.  Start with degree in finance from the best college you can get yourself into. After college, you'll want to get a job with a good size accounting firm in tax accounting. With that education and experience, you'll be in a good position to become an advisor.