There are a few things I do not understand or are unclear about building and production :
A) When I build infantry Corps on the first military phase, it is written in the overlay tooltip that the unit will be available in Nov-Dec 1914. However, when I confirm the building, it states it will become available on June 1915. Which one is the right date?
B) When I build HQs, do they come with Corps included or are they empty of any Corps?
C) Navy unit: Do I have to build each steps individually? What does happen when I choose to build only 1 step?
D) Firepower upgrade: Do I have to play 20 EP individually per Corps, or does it upgrade for all similar types of Corps?
Thanks!