Conversation so far:
Where was Joshua Chamberlain born?
Joshua Chamberlain was born in Brewer, Maine.
Who was Joshua Chamberlain's mother and father?
Joshua Lawrence Chamberlain was the son of Sarah Dupee (née Brastow) and Joshua Chamberlain.
What day was Joshua born on?
Joshua Lawrence Chamberlain was born September 8, 1828.
What was unique about Joshua Chamberlain's family tree?
Joshua Chamberlain was of English ancestry and could trace his family line back to twelfth century England, during the reign of King Stephen.
Did Joshua Chamberlain have any family?
Joshua Chamberlain was the oldest of five children. It is said that he was his mother's favorite while his father was tough on him.

Question: What was chamberlin forced to do
Self-contained rewrite: What was Joshua Chamberlain forced to do?