Final answer:
The Marines are the branch of the military that would most likely let go of its tanks to focus on rapid deployment in island operations.
Step-by-step explanation:
The branch of the military that is most likely letting go of its tanks in order to focus on rapid deployment in island operations would be the Marines. The Marines are a branch of the military that specialize in amphibious operations, which involve operations in and from the sea. They are trained to conduct various types of missions on land, including island operations. Letting go of tanks would align with their focus on rapid deployment and maneuverability in such operations.
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