Why would an army want control of a city like Savannah during wartime?

Question

Savannah is a railroad hub

Savannah is an important port city, so controlling Savannah would allow an army to control the supplies going in and coming out of Georgia

Savannah is Georgia's prettiest city and is considered highly desirable.

Savannah is the cotton capital of the South

only answer the question

Answer 1

An army would want control of a city like Savannah during wartime because it is an important port city, allowing control over the supplies going in and coming out of Georgia.