The McClellan System of designating flags was the most confusing, convoluted system I have ever seen! No wonder the Army of the Potomac changed to the more simple system later on devised by (I believe) Butterfield.

Much easier to deal with.

I have the Madaus essay on the McClellan flags and would be happy to copy it for you. Email me at Biggsg@charter.net and I can send you my address where you cans end a self addressed stamped envelope (large size).

Greg Biggs