arduous dutygreat privilege of writing this week's Dev Diary has fallen to me, and in a desperate but vain attempt to fill Doomdark's shoes, I am here to talk a bit about the various options that are open to pagans when waging war.
Norse Pagans, or Vikings as they are known to the common man, have the unique ability to launch Prepared Invasions against non-pagans. This undertaking can only be done by small to middling Viking realms, and the target of your invasion can't be too small or too big (it needs to have between 9 and 40 holdings).
The way this works is that you declare your intention to invade a particular realm. This will cost you a lot of prestige (which can be gained through looting, as explained in the previous Dev Diary), and you'll have two years to prepare before going to war. During this time warriors from across the Norse lands will flock to your banner, hungry for loot and plunder. Needless to say, if you fail to declare war before these two years are up, you will lose face.
Pagans won't shy away from fighting each other, and all pagan rulers may make use of the new Subjugation casus belli. This lets them attack other pagans within a specified target kingdom, but it can only be used every ten years unless your ruler has the new ”Become King” ambition. If you are the victor of a Subjugation war, you will vassalize all lords within the target kingdom.
Pagans can always declare war for control over a single neighboring county, and in addition to this, Norse Pagans may also go to war for any coastal county.
This casus belli can only be used by independent Altaic (Turkish and Mongol) and Magyar pagan rulers, and it targets entire kingdoms in what amounts to massive horde invasions. You may have been on the receiving end of these before, but now you'll finally get a chance to unleash them yourself as you ride in from the steppes to carve out an empire.
And finally, a few more items that have a significant impact on pagans and how they wage war:
Non-pagans suffer from a significantly smaller supply limit when in pagan territory, which limits their ability to march massive armies towards the heathen homelands at the start of the game. This penalty will eventually be removed as you progress through the Military Organization technologies.
As was touched upon in the last Dev Diary, Norse and Tengri pagans lose prestige if they have been at peace for too long. The Suomenusko, Romuva and Slavic pagans are less focused on offensive warfare and do not have this penalty. In addition, their warriors enjoy several defensive bonuses, especially when fighting in provinces with their own religion.
That's all for now!