As with most Collectable Card Games there are a variety of card types to be learned, and then exploited.
Here is a brief overview of each card type in the game.
Maneuvers: A Maneuver card has as an effect and then it is placed into your Wreckage Pile, which is your discard pile.
Tactics: Are cards that are only revealed if they are triggered. Therefore, they operate like a delayed Manuever. [s]Tactics are designed to alter the way your Commander plays, the way your hand plays, or even the abilities your units enter the battlefield with. A Tactic card is placed to the left of the player's Flagship and remain in place until destroyed or their durability is reduced to 0.[/s]
Units: Units fight for you. They are deployed on to a Battleline and can be used to attack or block. Each unit has Attack, Shield and Durability.
Equipment: Are similar to Maneuver cards, but only affect the unit they are deployed on. Some Equipment have Durability, while most are effects focused on altering single ships.
[s]Crews: Are similar to Maneuver cards, but only affect the unit they are deployed on. If you are familiar with Magic: The Gathering there are comparable to Auras.[/s]
BattleField Mods: BattleField Mods bring their own rule to the game. Battlefield Mods are selected by Player 2 at the beginning of the game. [s]They affect the Battleline they are deployed in or the whole battlefield. They have Durability, therefore they can be destroyed by units or Maneuvers.[/s]
Each of these posts will also include a card lineup progress chart (This will not be updated each post to track the pattern of development).
A bit sad that there was only 3% bump in the completeness, but that is 10 cards and I was mostly working on the first turn mechanics for balance issues.
If you would like to see the current collection of cards you can view them all at the Library page. You may see a fair amount of Eve Online references, hope you enjoy them.
If you have missed any of the series installments check the links between:
Announcing Portas Aurora: Battleline
Portas Aurora: Battleline - Mechanic Terms Explained
Portas Aurora: Battleine - Races Explained
If you would like to have a card type explained in more detail please leave a comment or message me.