carlkay58 -> RE: Feeding the March East - carlkay58 vs Soviet AI (1/16/2022 7:52:23 PM)
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T03 Supply Thoughts: It's time to start explaining my take on Axis logistics. The supply engine in WitE2 is a further evolution of the supply engine introduced in WitW. I stumbled upon a simple system in WitW. I repaired as much rail as fast as I could and placed depots in every town or city on the rail. The depots defaulted to priority 4 and I just left them that way. And it worked. Of course, you had to worry about ports and a few other things, but trucks are abundant for the Western Allies and Allied air units are placed at just about every airbase so having a strong supply net with lots of demand from all over the map from combat units, engineering units, and airbases works best. Things do change when we move to the Eastern Front. First trucks are not overly abundant, in fact they tend to be scarce all of the time. Second the air forces are much smaller so less supply will be needed away from the active airbases. Third is the scarcity of quality road and even just rail lines. These factors more than offset the advantage of having direct land connections to the National Supply Sources (NSS). The supply system is a 'pull' system. Units pull supply from depots. Depots pull supplies from other depots of lesser priority and NSS. Supplies will trace routes along the easiest and cheapest rail routes so the more paths from the NSS to the depot the better it is. Supply demand is initialized from units of all types including air and engineering units. Depots also generate supply demand which helps pull more freight from the NSS towards the front lines. We want to generate as much supply demand as possible that is supported by our rail net to get the supply to where we need it. A simple set of rules to follow are: 1. Build a depot in every city you have rail through. 2. Any depot that has a supply trace from it to a frontline unit should be set to 4. 3. Any depot that has a supply trace from it to an active airbase should be at least 3. 4. Major rail lines should then have depots set to 2. 5. Any other depot should be set to 1. Those are general rules that will have exceptions depending on specific cases and your future plans. If you are planning an offensive in an area, then depots further back from the front should be set to 4 to max out the depots ahead of the offensive. This will give a good buildup of supply in the area close to where you will need it. There is a method that can be used to 'pulse' supply through your supply net. Take a depot with a large railyard. Set it up to priority 4 until it is full then reduce the priority down to 2 or 3 and it will empty itself out as it sends the built-up supply down the pipe to front line depots. This is the same idea behind the above suggestions about supply build up. When the offensive starts, you dial those depots down to 3 and all of that supply is able to move to new depots behind your offensive. Unfortunately, the Axis did not do this very well at the start of the war! Rail is fine and good for the long haul of supplies, but trucks are used to move supplies from the depots to the units. To keep truck wear and tear down you need the depots as close to the front line as possible. You also have the wagon rule that says any unit within three hexes of a depot does not use trucks. This is very important during the bad weather when trucks will breakdown all of the time. BUT many people forget that the offset to this is that units supplied by wagons will double their supply requirements. If you are having problems moving supplies to the front line making the amount you need double is not going to help you. This is an important fact to keep in mind. Areas that you can afford and should use wagons are areas that have a good rail net and lots of built-up supplies. An excellent example is AGN. AGN gets their supplies through the Baltics with a good rail net coverage and almost entirely separate from the rail net required for AGC or AGS. With a well repaired rail net in the Baltics, you can reduce your truck requirements in the northernmost area of the front. Areas that are a bad choice is most of AGS. There are few east-west rail lines that have to carry all of the supplies for the front. While the Crimea itself can use naval supply to supplement the rail lines almost no other part of the southern front is going to be able to keep the rail capacity up to what is needed for supply.
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