"Tom,
I think every architect during the Golden Age, with the possible exception of Raynor, was trying to imitate nature in their design. Frankly the article posted above looks like it was copied from George Thomas's book about how to build a natural looking bunker. Behr never studied camoflauge and he was ceratainly concerned with imitating nature; yet his designs have been compromised, unlike MacKenzie's. What exactly did MacKenzie learn learn in So. Africa that put him head and shoulders above the rest?"
Pete:
I'll tell you what MacKenzie learned in So. Africa that may've put him head and shoulders above the rest, and apparently certainly in time.
It's true that the likes of Thomas, Behr and others like Tillinghast, Flynn, Wilson, Crump and a number of others were dedicated to imitating nature in golf course architecture. Most all those men were in complete concert with MacKenzie in that way and he with them. But the point is most of the above began doing it around the teens and into the 1920s.
The fact is MaKenzie obviously came up with the idea around 1900 because that's when the Boer War was and when he made his observations on camouflage during the Boer War and probably how to apply it to golf course architecture.
Some of his fellow heathland contemporaries like Fowler, Colt, Abercrombie, Simpson et al may've been getting into imitating nature too shortly after that but the point is Mackenzie may've been the first to come up with an idea like this applied to golf course architecture for the purpose of creating a much greater look of naturalism in architecture.
A lot of understanding most anything about golf architecture is understanding not only WHAT happened but also WHY and particularly WHEN.