I live right near Yuma Proving Ground where the Army does all of it's vehicle testing (and much more). They have a static display on the road to the main gate which features maybe 20 of the units they have tested including tanks from the WWII Sherman (pictured) to the Abrams. It's always fun to see what's on their 'desert test loop'.
That is so cool. You are very fortunate to see these regularly. I don't even think that South Africa has tanks and if they did, they probably lost them or they were stolen lol. Beautiful piece right there. Now I really do want a tank.
That's a WWII Sherman. Our General Patton trained around here and used them to great effect in North Africa and Europe.
You can actually buy a tank here. They are really popular as monuments, lots and lots of places have one parked for public viewing.