What evidence do you have that both armies were aware of th advantage of having higher ground?

Both armies during historical battles often recognized the strategic importance of higher ground, as evidenced by their battle formations and tactics. Military records and accounts from various conflicts, such as the Battle of Gettysburg, illustrate that commanders actively sought elevated positions to gain a tactical advantage over their opponents. Additionally, the movement of troops and fortifications frequently reflected a concerted effort to secure high ground, suggesting a shared understanding of its benefits in terms of visibility, defense, and artillery effectiveness.