This update doesn't really fit in the changelog but I thought people might find it interesting anyhow.

I've been researching the effect of slope on movement.

As it turns out, this is a pretty complicated subject and it seems there's no military standard.

The nearest I can find is Naismith's rule.

That says that the time to add for a metre elevation change is roughly equivalent to 8 metres lateral travel.

This is for fit walkers who are rambling.

Soldiers will move slower and as the slope increases they'll slow more.

Not quite as much as I was originally thinking though so I've revised my planned costings down.

Part of the discussion about this touched on Austerlitz where Soult gave an oft referenced 20 minute prediction for a corps.

Turns out this was across a valley floor rather than up the Pratzen heights.

Along the way I found Austerlitz on google maps and downloaded some google maps data.

Here's the area on google maps.

Soult's predicted corps move was from the stream Goldbach to a line drawn between the villages Blaziowitz and Pratze.

The Goldbach is a stream - the one runs vertically through slapanice.

I think Blazowitz would now be Blažovice and Pratz Prace.

Here's the google maps link:

https://www.google.co.uk/maps/place/%C5%98%C3%AD%C4%8Dka/@49.1500399,16.7444888,13z/data=!4m5!3m4!1s0x4712ecc1e350035f:0x956d24070b7ba50a!8m2!3d49.1838418!4d16.7592828!5m1!1e4The pratzen heights are that ridge over to the right.

I worked out some likely looking points for the top two corners of a map and downloaded some google data.

The result is probably bigger than you'd want if you built your own Austerlitz map but the richness of elevation data is quite interesting.

( Yes, I need to get out more ).

The google map is a subset of that - roughly the top left corner.

There will be some modern junk complicating the data there.

I don't notice anything which would have much significant effect on a game though.