Thank you very much, Stephen, that is very helpful indeed! My main interest (in this regard) has been to find diagrams that are representative of the Napoleonic era (I've been thinking about building another cannon model, but if I do I would like to build an "authentic" pattern; my two previous "Napoleonic Era" models are fictional). Having an overall broad view of the evolution, including the changes going forward, is excellent.

Regards, and thanks again

John