There is nothing to worry about right now with the word "Alliance" but it will come into play later.
As of right now, they are played like regular strategy cards.
Also, at the left top you will find "Antiquity & Medieval" This is pretty much all that has been released up til now in the main Empires and Generals Game unless it is a "Trans-Dimentional" Card.
The last names of these cards reflect all of the wonderful families that have helped me get this game going... You know who you are. God bless you all and I hope everyone finds them exciting and new.
Hit me up on the forums if you have questions.