Yes, they upgrade for free when at war. If however you want it to become a major IC before going to war you must pay 20 IPC as normal per IC.
UK combined forces question
Lets say that Calcutta has 10 tanks and London 10 more in Africa and they are both in the Europe map and they have combined their forces, do they attack together on turn London for instance or do they attack half and half? Thank you in advance
all UK forces move and fight as one nation. the only sense that India/England are separate is for the purposes of building and collecting.
Thank you rockrobinoff!