Separate campaign servers
Each server is a separate campaign. On each one you control a single country, and your country, armies and country resources stay separate between servers. Gold is the exception: it is held by your account.
Practically, this means you can run distinct strategies on different servers, but a setback on one never drains another.
Country relationships
Diplomacy lets you shape relationships with other countries on the same server. Your neighbours matter most: they share borders and roads with you, and their forces can reach you first.

Illustrative artwork — not gameplay footage
Private messages
Private messages let you speak directly with other players. Use them to clarify intentions, coordinate around shared borders or warn before acting. Remember that a message is not a guarantee — keep your defence active and read live warnings, not just words.
Planning a persistent campaign
Protect income
Real-hour province income is your engine; captured provinces lose unfinished jobs without refund.
Sequence the training slot
One shared slot per server means a production plan matters more than a pile of facilities.
Leave timers running
The campaign continues while you are away. Start long jobs before stepping off.
Trust live data
Combat reports are history. Act on current contacts and incoming-lock sirens.