The Jungle Patrol was founded by the Phantom in 1664 with the
  immediate purpose of smashing piracy and banditry that plagued the coastal
  areas of Bengalla during the 17th century. The original corpsman were the
  former pirates of Redbeard's band, with Redbeard himself as first officer in
  command. (The Phantom was, and is, the commander of the Patrol, but his duties
  often take him far afield, and the first officer is in active charge of day to
  day business.) The Jungle Patrol was very busy in those years, and their deeds
  were often not logged until long after the fact. Hence, the true origin of the
  Patrol became shrouded in the fog of time, and later generations of the corps
  seldom knew or suspected that they were "descended" from Redbeard
  the Pirate.
  After a disastrous incident in the 19th century, when the first officer of
  the Patrol turned criminal, the relationship of the Phantom to the Patrol
  became a secret. No one, not even the Captain who acts as first officer, knows
  that the secret commander of the Patrol is, in fact, the Phantom himself. The
  secret commander communicates with his Captain by an elaborate means. At the
  edge of the town, in a deserted mining headquarters, is an old stone-lined
  well that is marked as CONDEMNED. The Phantom rides the well-bucket to the
  bottom of the shaft, then proceeds down a long passageway that leads to a
  metal chamber underneath The Jungle Patrol HQ. Here, the Phantom can receive
  reports that are dropped in a wall-slot inside HQ, and he can send messages to
  the Captain by a similar drop-slot that deposits directly into a locked safe
  in the secret commander's office. Only the Captain has the key to the office,
  and the only thing in it is the safe. The commander remains unseen, yet he
  always knows what is happening throughout the jurisdiction of the Jungle
  Patrol.
  
The Patrol is an elite corps. Hundreds of thousands of applicants from all
  over the world are screened each year. One thousand are brought to Bengalla
  for rigorous physical and intellectual testing. Only ten are selected to
  become active corpsman. (as distinct from Honorary Membership, which is not as
  strictly limited).
  
They are one of the best trained forces in the world, able to handle
  jungle, desert, mountain and sea survival. They are taught mastery of all
  kinds of weapons as well as unarmed combat. They know criminal investigation,
  law and medicine. It is the proud boast that one corpsman can handle ten
  criminals.