*COL.JOSHUA LAWRENCE CHAMBERLAIN~ +the 20th Maine. Gettysburg-July1,1863.By vocation he was a professor,not a soldier. Col.Chamberlain had volunteered for the army,however+he was a natural leader.He+his regiment-the 20th Maine Infantry-had endured a bloody baptism of fire at Fredericksburg&Gettysbury they defended a crucial sector of the Union line.“hold at all hazards,”they were commanded+they did.