TEXT: E1 RECRUIT
  KLINGON RANK INSIGNIA
  MARINE ENLISTED GRADES
  E2 JR PRIVATE
  E3 VETERAN
  PRIVATE
  E4 SENIOR
  PRIVATE
  E5 JUNIOR
  SERGEANT
  E6 VETERAN
  SERGEANT
  E7 SENIOR
  SERGEANT
  E8 MASTER
     SERGEANT
  E9
  SERGEANT
  MAJOR
  E10 GROUP
  SERGEANT
  MAJOR
  E7 SENIOR
  SERGEANT
  (ARMOR)
  Klingon Marine enlisted insignia follow the standard
  pattern, but with green triangles. Marines must be
  qualified infantry before they can become
  technicians, so Marine technicians have one green
  triangle and one yellow triangle. These exist only in
  grades E5, E6, and E7.
  There are rare Marine armor units which exist to
  support larger Marine formations. The sergeants of
  such units have a black triangle (same as Army
  armor sergeants) and one green triangle.
  Copyright © 2009, ADB, Inc.
  E5 JUNIOR
  TECHNICAL
     SERGEANT
      (Logistics)
  E6 VETERAN
  TECHNICAL
     SERGEANT
     (Combat
       Engineer)
  E7 SENIOR
  TECHNICAL
     SERGEANT
     (Medical)
  
SOURCE: textdata/thevault/Star Trek RPG/Prime Directive/02. Armadillo Design Bureau/PD20 Modern/Website Freebies/Klingon_Ranks_Marine_EMs.pdf