Mouwembleem 9th Coastal Artillery (Sleeve patch 9th Coastal Artillery)

The 9th Coast Artillery Regiment was a Coast Artillery regiment in the United States Army.

Constituted 27 February 1924 in the regular Army as the 9th Coast Artillery Harbor defense (HD) and organized at Fort Bankson 1 July 1924. from the following Companies.- 172nd, 59th, 113th, 120th, 136th, 137th, 177th, 178th, only Batteries HHB, A, and C, activated.

• Batteries A, and C, inactivated 20 February 1930.
• Battery A reactivated 1 July 1939 at Fort Banks and assigned to Fort Strong.
• Battery B activated 1 July 1940 at Fort Banks.
• HHB, of 1st and 2nd Battalions activated at Fort Warren (Massachusetts), and Fort Strong.
• Battery C activated at Fort Banks on 1 July 1940, assigned to Great Brewster Island on 19 July 1943.
• Batteries D, and E, activated at Fort Warren 1 July 1940. (Battery D assigned to Fort Dawes until redesignated battery F and moved to Fort Warren on 2 October 1941). Then redesignated HHB 3rd Battalion and reassigned to Fort Ruckman
• Battery F activated at Fort Strong 2 October 1941, and assigned to a 155mm Battery at Salisbury Beach.

On 1 June 1941 3rd Battalion was activated as Follows-

• HHB 2nd Battalion redesignated HHB 1st Battalion on 10 October 1941
• HHB regimental redesignated HHB 2nd Battalion
• Battery C redesignated Battery D.
• Battery D redesignated Battery F.
• Battery F redesignated Battery C.
• HHB 3rd Battalion activated 1 June 1941 at Fort Heath.
• Batteries G, and I activated at Fort Andrews 1 June 1941
• Battery H activated at Fort Banks 1 June 1941
• Battery K (SL) activated 1 June 1941, and assigned to various posts around Boston Harbor.

On 8 March 1943 HHB 3rd Battalion, and Batteries H, I, and K transferred to Fort Ruckman and Battery G to East Point Nahant, MA.

9th Coast Artillery Regiment reassigned to Fort Hood, Texas 14 March 1944

• disbanded 26 June 1944