This is probably a simple question, but I'm a little confused.
Dozer Blade: "Vehicles equipped with dozer blades can reroll a failed difficult terrain test as long as they are not going to be moving more than 6" that turn." - Marines page 25.
But as far as I can tell, in the Marine list only Dreadnoughts, because they are walkers, take difficult terrain tests, and they can't take dozer blades. Also, how do you 'fail' a difficult terrain test?
The rule book says that infantry and walkers take difficult terrain tests. Other vehicles don't, but they do take dangerous terrain test when they pass through difficult terrain. Is this correct, or did I totally miss something? Do all non-skimmers take difficult terrain tests?
Is the dozer blade entry a misprint, should it read "Dangerous terrain tests" instead of "difficult"?
Please help!