2 Player Card Game Input Appreciated

Hey everyone I recently had an idea for a 2 player card game and would like some feedback as to what you all think about it or recognize it as an already existing game.

There are four decks of cards used in the game
1. The Territory cards
2. The Battlefield cards
3. The Recruitment cards
4. The Mission cards

At the beginning of the game each player picks a fortress card which acts as their main base (basically like the Boss cards from Boss Monster) which has an certain special effect. Each fortress comes with two towns cards that have effects exclusive to the fortress the player has selected. Once each player has their fortress and town cards, they place one town on each side of the fortress and begin the game. Each turn a player picks from four different actions:
1. Gain Territory
2. Attack
3. Recruit More Troops
4. Complete a Mission

If a player chooses to gain territory, they draw a territory card and place it adjacent to an existing town or territory card. Territory cards serve as a means of gaining effects and troops for max troop limit and effects are listed on the cards.

If a player chooses to attack they select one of their territory cards and an opponents territory, town, or fortress. There are certain battle mechanics I have worked out but to keep it simple, if you win against a territory or town you temporarily gain control of it earning a specific effect for a few turns while disabling the opponent form using it. The fortress being destroyed I will talk about later.A battlefield card is also drawn during an attack to add some random effect into the battle. When attacking other territories and towns can be used to reinforce the territory in combat by providing reinforcements utilizing its own troop limit.

If a player chooses to recruit, they draw a recruit card and roll a die to gain troops into their territories, however the max troop size of a territory cannot be exceeded.

If a player chooses a mission they will draw a mission card. There are two types of missions (active and passive). Players may only have one passive mission at a time. If they draw a new one they can choose to keep or replace the existing one. Active missions are missions in which the player must meet the requirements once they've drawn the card. Missions being completed will give the player victory points.

There are two ways of winning the game. There will be a set amount of rounds (each player goes once in a round) for the game. At the end of the game, the player with the most victory points win. The other way to win is to destroy the other players fortress which tends to have a high troop limit so it is not easy to accomplish and if done wont occur till late game.

I think the game is well rounded in how players have to utilize all the decks to win. Although there is some luck involved with cards, I feel the two different ways of winning adds to the tension of whether or not a player will choose to attack the fortress rather than go solely for victory points.

I had some fancy ideas like adding attrition to the reinforcements to make territory placement more important and battles more exciting. Also to clarify the territories are place in a line extending both left and right of the fortress.

I am still missing some concepts but I have a general rudimentary idea of what I want the game to be. I am planning on pursuing this idea one way or another to see how it turns out but like i said before some feedback from some people would be nice since I am very new to game design. Also does anyone think this could be adapted into a four player game as well I had some ideas that could tweak the game to make it suitable for 2 and 4 players but I'd like some opinions on whether or not that should be something I should pursue.

P.S. Card and deck names still pending

THANKS A BUNCH!!!