Advanced

Ad·vanced

Advanced

a.
  1. In the van or front.
  2. In the front or before others, as regards progress or ideas; as, advanced opinions, advanced thinkers.
  3. Far on in life or time.
    A gentleman advanced in years, with a hard experience written in his wrinkles.

Phrases & Compounds
Advanced guard
a detachment of troops which precedes the march of the main body.