I answered this way back on page 13 (see it helps to read the entire thread ). http://www.macrossworld.com/mwf/index.php?...=2&t=140&st=240 Think of it this way, if a tank's cannon wasn't mounted on a turret and was fixed, it would be forced to move the entire vehicle into a new firing position everytime. This would be quite a pain in the ass. What transforming does is increase the firing arc.