Which battalion focuses on heavy weapons and indirect fire support?

The correct choice, Weapons Company, is specialized in providing heavy weapons and indirect fire support within a Marine infantry battalion. This company is specifically organized to enhance the combat capability of the infantry by operating various types of crew-served weapons and artillery systems, which are crucial for enabling effective fire support in combat scenarios.

Weapons Companies typically incorporate units that operate weapons such as mortars, machine guns, and anti-tank systems, all of which ensure that infantry units can engage enemy forces effectively beyond their direct line of sight. This capability is essential for suppressing enemy positions, delivering accurate firepower, and enabling maneuverable combat operations.

In contrast, the other choices do not specifically focus on this area of expertise. Headquarters Battalion serves more administrative and logistical roles rather than engaging in direct combat. The Tank Battalion focuses on armored warfare and mobile warfare rather than primarily on indirect fire support. The Infantry Regiment encompasses a broader operational role, which includes various infantry units, but does not dedicate a portion specifically to heavy weapons and indirect fire like the Weapons Company does.