What is the fine-grained topic of the following text: Though Chamberlain was more of an academic than a soldier, graduating from Bowdoin College in 1852 and serving on its faculty as Professor of Modern Languages from 1855-62, his actions commanding the 20th Maine Regimental Infantry at Gettysburg revealed that he possessed many of the leadership skills valued both in military command and in civilian leadership positions. Only return the topic.
Chamberlain's Leadership Skills in Military and Civilian Roles