Then Chamberlain rallied his Pennsylvania regiment who were retreating from a Confederate charge .
Chamberlain slumped on his horse , initially unconscious , but regained consciousness in time to respond to General Griffin who had come up to check on Chamberlain 's condition .
Then Chamberlain rallied General Griffin 's Pennsylvania regiment who were retreating from a Confederate charge .
Chamberlain slumped on his horse , initially unconscious , but regained consciousness in time to respond to General Griffin who had come up to check on Chamberlain 's condition .