speaking in present time.
They somehow broke into the black soldier factory where these were being assembled and removed a vital piece from inside of helmets. It was a red ball/egg tissue organic computer.
The soldiers look like hollow medieval armor but with a futuristic design.

A:

Gandahar, (1988), was a French animated science fiction and fantasy film.  There was also an English language version released as Light Years.

The peaceful people of Gandahar are suddenly attacked by an army of
  automatons known as the Men of Metal, who march through the villages
  and kidnap their victims by turning them to stone. The resulting
  statues are collected and then transferred to their base.
...
Sylvain later saves Airelle, a Gandaharian woman. Together they
  discover the Men of Metal’s base, whereOccupy Movement Shows National, Local Staying Power

PITTSFIELD, Mass. — On Sept. 17, 2011, several hundred demonstrators descended on New York City's financial district in what would soon become known worldwide as Occupy Wall Street.

The seeds for the event went back to mid-2011, when the popular magazine Adbusters published a suggestion that citizens set up encampment and "occupy Wall Street for a few months." The call caught the attention of some veteran activists, who began talking about the hybridization of tactics used in the successful Tahir Square protests in Egypt with those developed in Madrid's seminal Puerta del Sol uprising.

Despite drawing thousands of demonstrators to the financial district and the sudden full-scale encampment at Zuccotti Park, local and national media largely ignored the ongoing activist siege, until more than