Do you capitalize the word service in a sentence?

The capitalization of "service" depends on its role in the sentence:

Capitalize "Service" when it:

* Is part of a proper noun: For example, "U.S. Postal Service," "Customer Service Department," "National Park Service."

* Is the first word of a sentence: "Service is important to our customers."

* Is part of a title: "The Importance of Excellent Customer Service"

Do not capitalize "service" when it:

* Is a common noun: "The company provides excellent customer service."

* Is part of a general description: "I'm here to inquire about your service offerings."

In short, follow the standard rules of capitalization for nouns.