Hi Bill - I have been thinking through the implications of your reply above in terms of the mechanics of the overall game. It does not exactly square with section 7.12.2 in the Manual on Industrial Centers which says "These act as a primary supply source providing supply up to their maximum strength value according their Resource type (usually 10) even if they are cutoff from the Capital". St. John's, since it is located on an island, is always cut-off from both its (minor) Capital in Ottawa or the nearest Major Capitals in London or Washington. Yet it is obviously is not serving as a primary source of supply. I wondered if this was because St. John's is an Industrial Center that belongs to a Minor power.
Yes, it is because it belongs to a Minor power. Another way to consider this is that Primary and Industrial for Majors provide maximum supply, usually 10, but for Minors, when they are disconnected from a Major Primary supply source, they pretty much act as a typical Major power Secondary source of supply does, e.g. it maxes out at the usual 5.
It is the same reason why Canada, even though it has a Primary supply source in Ottawa, maxes out at 5 until the US joins and it is then connected to Washington D.C.
This is why Ottawa jumps to 10 once the US joins, because the connection now to Washington D.C. takes precedence for supply, but also why St. John's remains at 5 as it still disconnected. Because it is disconnected, and because it is a Minor Industrial source, that gives it its max value of 5, e.g. otherwise it would be considered fully disconnected and drop to 3 instead.
So, using Hotseat with the Case Blue campaign, I tested out cutting off from supply the only other Industrial Center belonging to a Minor that I could find on the map - Kalamata in southern Greece. In this campaign, Kalamata is an Axis occupied town connected by rail to Athens (its minor Capital) and back to Berlin and has a supply level of 6. I found that if I landed British units on the isthmus of Corinth (hex 191, 108) and cut the rail line this had no effect on its supply, which remained at 6 (and did not drop to 5 as I expected). This is not what happens when other Axis occupied towns are cut-off from a rail connection back to Berlin. So, I guessed this was due to it being an Industrial Center which was serving as its own primary source of supply. However, I was surprised to see that if British units also occupied all the land hexes on the mainland of Greece north of Kalamata, cutting off all overland routes back to Berlin, it drops to supply level 3 (consistent with the last bullet under the supply connection rules under 7.14).
Also, playing around with this scenario, I found that if I cut-off Athens (a city which is a minor Capital) both by rail and by land from the rest of the Axis, it still maintained its supply level of 8. Unlike Kalamata, its supply does not drop to 3 when cut-off by land. Even placing a naval unit against its port has no effect on its supply level. To double-check this result, I then used amphibious invasion to land a British unit in Denmark on hex 167, 68 cutting off the only land connection from occupied Copenhagen back to the rest of the Axis. Same thing - its supply level remained at 8 and did not change, even though it has no land connection at all to a friendly Major's Capital, Industrial Center or Primary Supply Source.
So, can you explain in terms of the rules why Kalamata retains a supply level of 6, even when its rail line is cut back to Berlin, while St. John's stays at 5. And can you explain why these two minor Capitals, even though both were completely cut-off by land, remain at their original supply levels for an occupied city, namely 8? The reason why I am keen to understand these specific cases is to fully understand how the supply connection rules work in practice.
I'd have to see screen shots to better understand and possibly explain these as it gets a bit tricky with occupied resources and whether it is a fully occupied and surrendered location, e.g. Greece is surrendered, or just partially occupied and so on. This is also because of the occupational efficiency factor that is applied to any occupied and surrendered locations and whether it is fully connected by rail to Berlin which would take precedence as the Major supply source, and/or whether there is a territorial connection as well, e.g. connected by friendly path of hexes but not necessarily via rail.
< Message edited by Hubert Cater -- 12/5/2020 9:52:32 PM >