Casemates Rule 16.1

[saracv3]

The rule for Casemates leaves some questions:
1. Can Casemates combine firepower with other units in its hex?
2. Do Casemates get combat results if in the same stack as other units? For example, a stack takes a X result. Does the Casemate take the M2 result or even the X result?
3. What status is a Casement in when in a stack that is attacked by Assault? Can it participate in a counterattack?