I believe the UK was where it was invented.
Click on the link to your right for the history of field hockey.
Cross country would be one of the best ways to train fitness for hockey
Australia, India, Pakistan, The Netherlands
The modern game of field hockey (which is commonly played on an artificial turf) originated in England.
It came from India and developed slower in today's modern day hockey, as for sport like ice hockey and other types of hockey's came from Canada.
The country that won the silver medal in the men's field hockey tournament during the Rio Olympics in 2016 was the country of Belgium due to them losing the Gold Medal match to Argentina.
There are a lot of good field hockey countries but the best for men are probably the Netherlands, Germany and Australia and the best for women are probably Argentina, the Netherlands and Australia.
Football, baseball, basketball, soccer, track and field, cross country, rugby, squash, tennis, lacrosse, ice hockey, field hockey, softball, rowing, crew, cricket