One appliance and crew from Brackley, one from Buckingham, one from Wheatley, one from Banbury, along with two officers attended.
A caravan was 100 per cent involved in the fire, two other caravans also had heat and smoke damage.
A man and woman were passed into the care of colleagues from South Central Ambulance Service to be treated for smoke inhalation.
The firefighters used two sets of breathing apparatus, two hose reel jets and a thermal imaging camera.
They also treated two puppies who had been in the caravan before colleagues from RSPCA arrived.