You might take a look at
Frontal Assault since the Amos source code is available. It takes a bit more memory and download time but it is definitely worth it if you have a system with 2 megs of chip ram and 2 megs of fast.
And as for Scorched Earth, that was the original PC version but it hasn't been maintained for a decade.
Also, Scorched Tanks version 1.85 had a bug in it when you were using one particular land formation because it would make transparent dirt so as soon as you cracked through the shell at the top you would fall far down to the bottom of the scrolling area! 1.75 was the last bug-free version.