Aside from what
@Vidkjaer said it is also important to mention that units also need to be in supply to be suffiently, well, supplied. If they are out of supply they wont be effectively resupplied and eventually will suffer heavy manpower attrition since they run out of food, water etc.
And this can be seen in the 4th video (Youtube) at time 54:50 where the battledialog is shown. Lets break it down.
Under the general picture for the german side there are 3 icons shown. A plane (green), a bunker and a 3-point attack. I believe this is
- Plane - Air superiority (bonus)
- Bunker - attacking a bunker (penalty)
- 3-way attack (bonus)
On the French side there is only a red plane, which i believe indicates a penalty due to not having air superiority.
On the very top is the air war for this attack on this province. Since Germany has 19 planes (bombers and and fighters?) and France zero, Germany has air superiority. Damage in green and yellow i cant find out what this means. Maybe green damage is how much damage to the French troops bombers has dealt and the yellow damage is plane damage dealt from defending AA? Shot down is well, shot down planes on each side.
The front width is 60. One front is 40, so if Germany is attacking from 3 sides, each new front adds 10 frontage and a additional bonus for attacking on more fronts from the 3-way attack icon.
Germany has 2 infantry divisons, 1 tank division and 1 cavalry division. They eqaul a total frontage of 61. The french side eqauls 62.
Germanys 2 infantry divisions has 3 marks on it. I cant figure out number 1 and 3, but the number 2 is a red gascan, meaning they are not getting supply. The tank division also has a shield. Maybe that means it has an armor advantage over a defending division.
The french side also is on low supply (red gascan), surrounded (the red circle), and are dug in (the shovel).
The stats for each divison is a sword (softattack), Pincher? (hard attack) and a shield (breakthrough for attacking (Germany) and defense for defending (French)). These stats are not the divisions stats but the stats after bonus and penalties has been applied. So the German player is attacking a fort, with dugin defenders while having supply problems. This makes the stats go so low. they are apparently noneexisting. Furthermore we know from the video that Jacob was in deficit of weapons II. so maybe further on the infantry and cavalry divsision were i lack of weapons furthering lowering the stats.
Reserves are divisions that can enter combat when another divisions is pulled out. So assuming the reserves has enough weapons and are supplied - Jacob should have selected 1 division at a time and pullede them out of combat so a reseve division could enter combat - time to do this depends on the division stat that a signal company boosts.
Come to think about it.. Jacob has 16 reserve divisions. In HOI3 a lot of reserves resulted in a penalty. Maybe Jacob is having this penalty here also?