Roundel or Rondel. A roundel is a small circular decorative plate used extensively in Renaissance courtyards and arcades often a niche containing a bust. A roundel window is a small, ornate, circular window.oundel or Rondel. A roundel is a small circular decorative plate used extensively in Renaissance courtyards and arcades often a niche containing a bust. A roundel window is a small, ornate, circular window.
Extended active duty is defined as active duty performed by a member of a Reserve component when strength accountability passes from the Reserve component to the active military establishment.. - DoD Financial Management Regulation. Volume 7A, Chapter 56. tlnmcfat3.
Active duty in the various reserve components of the branches listed above is creditable for FERS. That is, service in any reserve component is creditable when you are called for an active duty period only. Such periods include annual active duty training periods.