Units Assigned to the HDCR
Insignia for the 18th CA Regiment (left) and the 249th CA Regiment (right)
Units Assigned to the Harbor Defenses of the Columbia during 1907-1916
33rd Company, CAC
34th Company, CAC
93rd Company, CAC
126th Company, CAC
160th Company, CAC
Units Assigned to the Harbor Defenses of the Columbia during 1924-1939
2nd Battalion, 3rd Coast Artillery Regiment (Harbor Defense)
249th Coast Artillery Regiment, Oregon National Guard (Harbor Defense) training camps
Units Assigned to the Harbor Defenses of the Columbia during 1940-1944
18th Coast Artillery Regiment (Harbor Defense)
249th Coast Artillery Regiment, Oregon National Guard (Harbor Defense)
History of the Western Defense Command
Operational History of Harbor Harbor Defenses of the Columbia
