Usually, when I get a Dragon 1+1 kit, it contains two of the same plane or AFV. Not this one. It contains the LTV-4 amphibious landing vehicle and a Jeep, which can be put in as cargo or, with the ramp down, can be shown loading or unloading.
The LVT was developed as a civilian ambulance/rescue vehicle which would operate in swampy areas where “normal” wheeled and tracked vehicles were useless. It had a watertight hull, with propulsion in water provided by the movement of the tracks. The unit could go directly from water to land to water with no problems. The Marines in the Pacific Islands found this particularly useful, as many islands had offshore coral reefs which would stop landing barges well offshore. The “Amphtracs” (or “Amtracs”), as these amphibious tractors were called, could cross the reefs and go up on the beach as far as needed.