The location crucial for the Union defense on July 2 was Little Round Top.

This strategic position was crucial for safeguarding the Union's left flank from Confederate assaults. Under the command of Colonel Joshua Chamberlain, the 20th Maine encountered numerous attacks throughout the day. Securing Little Round Top enabled the Union Army to uphold a robust defensive line and effectively respond to Confederate strategies. The intense combat at this site was instrumental in thwarting a Confederate breakthrough, greatly influencing the overall result of the Battle of Gettysburg.