Need to distinguish the electric turrents. Think these were often remotely controlled with computer assistance in aiming (i.e., no human at the gun). But maybe not all electrics? I can't think of any stock plane, but mod planes like the Hornisse, I think they usually put these types under AI control only. Page of interest:
http://forum.axishistory.com/viewtopic.php?f=84&t=19907 I think also, isn't this is late war stuff? So, not sure if electric will be relevant to CoD planes.