Steve
Have you had a chance to run any test ground combat scenarios as yet? Just wondering if you had a feel for how long ground combat may take to resolve v VB6. Just looking at the logistics info, if it takes say 30 days of fighting or (6 construction cycle phases in old money, which off the top of my head is about the time needed to get a victory with a decent numerical advantage), then for 2 of your divisions (as per the rules example) to defeat 1 equiv opposing division you would need to bring in an extra 180 combat phases worth of provisions which is roughly three times the starting provisions available. That equates to about 5500 supply trucks or about 340,000 tons worth of supplies to bring in. That's a lot of logistics! Am I way off or are we looking at a far more significant logistical effort to invade?
Also just thinking about the management of logistics will you be adding interrupts to give the play low supply warnings?
I've run simulations but not a full test yet. I do want managing logistics to be a major consideration for ground combat, but I may adjust based on testing. This could either be through altering the supply requirement or changing the frequency of combat rounds.
For the 'division' in the screenshots, the GSP is about 40,000, which is about 4000 GSP per combat round. One month would be about 240 combat rounds, or 960,000 GSP. That is 1920 supply trucks, or 119,000 tons of lift. However, the 'division' includes almost 400 100-ton heavy tanks, 144 42-ton medium tanks, 120 98-ton flak tanks, 144 heavy artillery pieces (1/4 of which are self-propelled), 6600 infantry and close to 600 other infantry elements with light artillery, anti-tank, machine guns, etc.
As a comparison, a WW2 US Heavy Armoured Division had 232 Medium tanks while a light armoured division had 168 tanks. These are WW2 era tanks, so are about 40 tons. Including tank crews and support, they had 16,000 and 12,000 personnel respectively. So the above 'division' is more likely a Corps and has much larger vehicles as well.
According to a book I am reading on logistics (see link below), each US division in 1944 consumed (on average) about 20,000 tons of supplies each month. That doesn't take into account all the supply chain organisation, the actual movement of supplies, rear area protection, etc., which Aurora doesn't simulate but which would require its own supplies to function. Based on all of the above, 119,000 tons of supplies doesn't seem too bad. However, I will see how that works out in practice.
https://www.amazon.co.uk/Supplying-War-Logistics-Wallenstein-Patton/dp/0521546575