1. No You cant See others Players Citys or Armys (which is logical just imagine how the World would look if you had Armys walking all over the place lol)
But yes you can Attack other Players Armys and Citys by having your Army send out Scouts to find an Target for you in the PvP Queue
2. You can deduct the Territory on the Map used if your Attacking an City
however unless your Enemy names himself you wont be able to find out who he is.
Also You cant Conquer Citys of other Players you can only Plunder them.
3. The Matchmaking will make you Fight Opponents of more or less equal Power
there is currently no way of checking an Enemy beforehand.
Tough I honestly hope they Implement Spys over the Time.
4. Currently the NPC Towns if Conquered will be Forced to become your Allies
this has currently no Effect on other Players
However later on the System is planned to work different
Later on you shall be able to Conquer NPC Towns and rake some sort of Benefit in for Holding it against other Players
means that the NPC Town will always be in the Hand of one or more Person which will then also Defend it and try to hold it against Attackers.
This Game is in Tactical regards a bit like Total War
the In Battle System is very similar not only for Platoon Control but also for Battle Options and Sieging
However the Campaign Mode cant be Compared to the Total War Single Player Campaign
Dont forget there are supposed to be more than 100 People on that Map
thus it is completly Impossible to make an Campaing Map like in Total War
because the Number of Territorys would just be far too much for an Detailed Game like DoF
I am sorry to Dissappoint you on that one
In the Shadow of the Black Cross. We Fullfill our Duty in your Name.
And Look forward to the Day we Return to your side Silvanos.
Watching over our Comrades as they Fullfill their Duty in your Name.