Which branch of the military is primarily concerned with land warfare?

The primary branch of the military concerned with land warfare is the Army. This is because the Army's main mission is to conduct ground operations, which include various types of combat involving infantry, armored units, artillery, and other land-based forces. It is specifically organized, trained, and equipped to engage in direct engagements with enemy forces on the battlefield.

While other branches of the military, such as the Navy and Air Force, support land operations through naval power, air support, and logistical capabilities, their core missions are centered on maritime and aerial dominance, respectively. The Coast Guard, while also a military force in certain contexts, mainly focuses on maritime law enforcement, search and rescue, and homeland security rather than direct land combat operations. This distinction further solidifies the Army's role as the primary entity responsible for land warfare.