Why Sergeant and Staff sergeant are similar

Sentences that refer to both

Sentences that refer to both
  and 

  • Among the US soldiers, four were killed: Staff Sergeant Bryan Black, Staff Sergeant Jeremiah Johnson, Sergeant La David Johnson, and Staff Sergeant Dustin Wright.Tongo Tongo ambush-Wikipedia

This will create an email alert.  Stay up to date on result for: Sergeant & Staff sergeant