The Hiller CH-112 light reconnaissance helicopter replaced the Bell 47-D at the Canadian Joint Air Training Centre, Rivers, Manitoba. It was a three-place helicopter with a single main rotor and an anti-torque tail rotor. Designed for operations in confined areas of the combat zone it could carry two passengers, two litter patients, or 400 pounds of cargo. Designated the OH-23D by the U.S. Army, the CH-112 was used by the Canadian Army for training helicopter pilots and for operational exercises during Brigade concentrations in the summer months. Some of these helicopters provided reconnaissance and liasion facilities for No. 4 Canadian Infantry Brigade Group in Germany. It was intended that in the event of a national emergency, CH-112s would be employed in: air movement of small urgently needed stores; aeromedical evacuation; radio relay and transmission; Air Despatch Letter Service; messenger and courier service; line-laying; traffic control; radiological survey; danger warning - use of loudspeakers
