Very quickly, we have become most closely attached to the American military culture, which American researchers have found to be even more toxic than the Canadian military culture. It actually encourages and enables sexual assaults within the U.S. military, so they're not a very good model.
I don't know a lot about too many others, other than a little about Australia and the United Kingdom. Their records are no better than ours, so I'm afraid I'm at a bit of a loss there.