[Mark W. Tonner]

Originally Posted by RHClarke

You will find a lot of units using the same "number", but they are located in different formations (Brigade, Division, Corps, Army/Army Group). The confusion is avoided by looking at the formation tac sign that usually accompanies the artillery or AoS number.
Visit http://home.cogeco.ca/~gdavidson1/home.html for examples - look at
1st Cdn Inf Div, AoS 47 and then the same for the 2nd and 3rd Cdn Inf Divs. Three separate units with the same AoS sign.

Modern tac signs are less "flashy" but easier to comprehend - you don't have to remember colours or colour patterns...

... I didn't realize that you had posted this before my reply ... I'm getting slow I guess