Captain America: Civil War will be the first time that we see the Avengers go at war with each other on the big screen. The film will be released May 6, 2016 and one site is reporting which heroes will be on each side.
Heroic Hollywood has it like this:
Team Captain America:
1) Captain America
2) Hawkeye
3) Falcon
4) Scarlet Witch
5) Ant-Man
6) The Winter Soldier
Team Iron Man:
1) Iron Man
2) The Vision
3) Spider-Man
4) Black Widow
5) War Machine
Black Panther is said to be neutral. The two obvious Avengers members not mentioned are Thor and Hulk.
Captain America: Civil War will be loosely based on the Civil War from the comics.