- Chaguaramas: This was the largest and most important American military base in Trinidad. It was located on the northwest peninsula of the island and served as a naval base, air base, and submarine base.
- Scarborough: This base was located on the northeast coast of Trinidad and served as a naval base and air base.
- Monos Island: This base was located off the west coast of Trinidad and served as a naval base and submarine base.
- Galera Point: This base was located on the southwest coast of Trinidad and served as a radar station and air base.
These bases played a crucial role in the United States' war effort by providing logistical support for military operations in the Caribbean and South America, as well as by helping to protect Allied shipping from German U-boats.