Who did Montcalm and the French capture in The Last of the Mohicans?

In "The Last of the Mohicans," Montcalm and the French capture Cora and Alice Munro, the daughters of Colonel Munro. The sisters are taken during the conflict between the French and British forces in the French and Indian War. Their capture is a pivotal moment in the story, leading to various rescue attempts by the protagonists, including Hawkeye and the Mohicans.