What is the abbreviation for which the term is the origin of the Seabee name?

The term "Seabee" originates from the abbreviation for the term "Construction Battalion." This name was adopted during World War II when the U.S. Navy established the Naval Construction Battalions—units responsible for building bases and supporting the U.S. military operations in various theaters of war. The name itself is a phonetic spelling of the initials "CB," which stands for Construction Battalion, emphasizing the Seabees' key role in construction and engineering within the Navy. This historical context highlights their primary mission of providing engineering support and facilitates the understanding of their ongoing responsibilities today, which continue to focus on construction and combat readiness.