Hi
Coldsteel!
Well, let's go step by step.
1) What you say is normal. From 1.14 patch: "
Implemented a new attribute provided by Pocus (*NoCapture*). Early game horse mounted units can no longer take control of city structures. Once cavalry upgrades to (Late) cavalry (around early 1863), this restriction is lifted. In other words, you will have to accompany invading forces with non horse mounted units if you wish to take control of city structures during this early game period. To clarify: this only applies to city structures, NOT standalone depots/harbors". Therefore, you will also have to use infantry or artillery units to capture these cities.
2) Don't worry. Try to put in command of your stacks to the best generals that you have, and so your troops will benefit from the good command values of these general. In the example that you have commented, if I were you, I would put Sherman in command of the Army, ie, as an Army commander, not as a Corp commander. It's very easy. If you have 2 generals, for example, one of them with very good stats (the case of Sherman) and the other one less good, you should put in command of the Army to the best of them and the other general should be in command of the Corp, and so the worst general's characteristics will be improved by the influence of the best general's characteristics. If you do the opposite, Sherman's stats will worsen. I don't know if I have explained it clearly.
3) Send to the shipping box all transports that you can and protect them with warships, frigates especially, because they have a high value of detection and evasion.
Frigates (light, steam, and armored) can be used to pursue raider ships in the shipping box; however, they can also be used to intercept blockade runners in the blockade boxes.
Light Frigates have the highest Blockade rating, and are most effective at raising the blockade %.
The USA also has the option to transport supply by sea to coastal areas and ports. The transport capacity depends on the number of transport ships allocated to the “world shipping” box and is displayed on the transport assets panel at the top of the map.
Example: Union shipping allows long distance supply transport, for example from New York to New Orleans. The process is automated and will strive to augment the supply of needy ports and coastal depots by transporting any excess supply in the Northern harbors to where it is needed.
In addition, transports will report you money each turn.
Add some ships in the blockade boxes first, then to blockade the biggest confederate ports. This will add up.
Light (not Steam or Armored) Frigates and blockade ships are the most effective ship types.
4) With respect to the artillery...
The artillery that comes with brigades is usually 6 lb parrot. Over time it can be improved to 12 lb. However, if you buy separate artillery, you can choose among 6 lb, 12 lb, 10 lb, 20 lb, siege artillery, rodmans, etc.
Anyway,
here I show you some links (by Dixicrat :coeurs
![Smile :)](./images/smilies/smile.png)
that will be very useful for you.
I hope I've helped you. Have fun!
Regards!