combination of option ="isInfantry" value="true" and option ="isLandTransport" value="true"
if a unit has both options, the movement gets unlimited.
if 2 units have both options and go together 1 additional unit is carried.
for both options set, movement has to be rectified.
if 2 units with both options go together, the unit with the bigger movement wins and no additional unit is carried.