text: FM 7-100.1________________________________________________________________________________
  OPERATIONAL ASSETS
  6-34. Operational reconnaissance forces support OSC commanders. They
  acquire and analyze information about an actual or probable enemy, to
  prepare for the successful conduct of combat operations. Operational recon-
  naissance forces usually collect information throughout the entire depth of an
  enemy corps area (300 to 600 km). Operational reconnaissance collection as-
  sets include signals reconnaissance, aerial reconnaissance, and SPF. OSCs
  conduct operational reconnaissance using their own resources, plus those of
  their subordinate tactical groups. Figure 6-1 illustrates the effective ranges of
  various reconnaissance means that may support OSC operations.
  SPECIAL-PURPOSE FORCES
  6-35. The General Staff often allocates SPF units to support the operations of
  an OSC or to become part of the OSC in a constituent or dedicated command
  relationship. Such units have SPF troops specially trained to insert by
  parachute, helicopter, light aircraft, or infiltration to conduct reconnaissance.
  Of course, commanders do not insert all of the assets at the outset to operate
  simultaneously; they might retain some in the reconnaissance reserve to be
  inserted against new targets or original ones left uncovered by the compro-
  mise or destruction of a team inserting in the first group.
  SIGNALS RECONNAISSANCE ASSETS
  6-36. The OPFOR typically allocates radio and radar intercept and direction
  finding units to OSC level. These assets report gathered information to
  higher and lower levels.
  AIR ASSETS
  6-37. The theater commander normally controls aerial reconnaissance but
  may allocate aircraft to lower headquarters to support a particular operation
  or battle. The number and composition of units, and the types of fixed- and
  rotary-wing aircraft can vary greatly. The OPFOR also employs UAVs to con-
  duct aerial reconnaissance.
  ARTILLERY ASSETS
  6-38. OSCs often have constituent target acquisition units to obtain and transmit
  meteorological, topographic, and targeting information. This can include sound-
  ranging systems, battlefield surveillance and countermortar/counterbattery radars.
  NBC ASSETS
  6-39. OSCs operating in potential NBC environments typically have chemical
  defense units and chemical reconnaissance units allocated to them.1 These units
  perform decontamination and detect, report, and mark all contaminated areas.
  ENGINEER ASSETS
  6-40. Engineer units have reconnaissance specialists to accompany maneuver
  unit reconnaissance forces. There are specialized engineer reconnaissance
  1 Although the OPFOR calls these units are “chemical defense” or “chemical reconnaissance,” their functions actually
  encompass nuclear, biological, and chemical (NBC) defense or reconnaissance. (See Chapter 11.)