These are US national terms? The British Equivalents are different in WW2 - and post WW2 when the British adopted much that is part of STANAGs IIRC from my training Azimuth is ordered as a bearing recorded for each gun using the slipping scale on the director. I was taught in mils, but the ww2 british army fought in degrees. The RA "comes into action" to deploy is guns on their platforms and "Comes out of action" on the command "Cease firing" Here is a link to the WW2 British (and commonwealth) procedures. http://nigelef.tripod.com/maindoc.htm and a glossary http://nigelef.tripod.com/glossary.htm
You mean Horton got it wrong!! *** edit for *** Now that I think of it I think he said spin rather than swing. Will have to listen to it tonight to see.
Watching that 155 crew in action is a thing of beauty....from this end ! Those on the receiving end are entitled to their own opinions. Gaines Oh, CAC,..... No !