What are the Marine Corps?

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #731 [color=blue]“Vocabulary Practice: War-related Terms (4)”, question 1

The Corps is composed of amphibious units that are often first on the battlefield and are directed by the United States Navy. They are one of the specialized branches of military service in America.

(a) Navy
(b) Squadron
(c) Tank
(d) Marine

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #731 [color=blue]“Vocabulary Practice: War-related Terms (4)”, answer 1

The Marine Corps is composed of amphibious units that are often first on the battlefield and are directed by the United States Navy. They are one of the specialized branches of military service in America.

Correct answer: (d) Marine
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Will I be right if I choose the word squadron? Thank you in advance.

No, there’s no such thing as Squadron Corps.
You can read on the United States Marine Corps here: en.wikipedia.org/wiki/United_States_Marine_Corps