Retirement

LRs:
LRs cannot retire

NCOs:
When NCOs retire they get automatically set to the rank of LCPL. They may choose to retire to a lower rank if they choose to. 

Officers:
When Officers retire they get automatically set to the rank of SSGT. They may choose to retire to a lower rank if they choose to.

HQ:
When HQ retire they get automatically set to the rank of Ensign. They may choose to retire to a lower rank if they choose to.

Note: You may not stop someone from retiring.