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To apply for Ranger School, a soldier must submit a Department of the Army Form 4187 (Request for Personnel Action) and the results of his Airborne or Ranger physical through the first lieutenant colonel in his chain of command to the installation Director of Plans and Training Management or G-3.
Upon receipt of notification, approved officers must have their requests (DA Form 4187) approved by the first lieutenant colonel in their chain of command and then fax it to (757) 788-6677 or DSN 680-6677.
In addition, to qualify as a 13D, the 13C or 13E, at a minimum, must undergo a battalion-directed training program and be certified as a 13D by the first lieutenant colonel in the soldier's chain-of-command.