The majority of the aircraft in use by the Army are?

The majority of the aircraft in use by the Army are rotorcraft. This is primarily due to the unique operational requirements that the Army faces, such as the need for rapid troop movement, resupply missions, and the ability to operate in diverse environments, including difficult terrain where fixed-wing aircraft may have limitations. Rotorcraft, particularly helicopters, provide the versatility to hover, take off, and land in confined areas, making them essential for missions that require quick deployment and extraction of personnel.

Additionally, rotorcraft can perform a variety of roles, including reconnaissance, medevac, and close air support, which are vital for ground forces. The prevalence of models such as the Apache and Black Hawk illustrates the significant reliance on helicopters within Army aviation. This contrasts with the other types of aircraft listed, which serve distinct roles more suited to air force operations or specific missions, rather than the diverse, on-the-ground requirements that rotorcraft fulfill for the Army.