Staged at Camp Upton assigned to 34th Brigade (CAC), arrived in France 6 September 1918. Departed France 10 February 1919. Demobilized at Camp Eustis 1 April 1919.
Hawaiian AA Regiment constituted 2 May 1921 and organized 3 June 1921 at Fort Ruger with personnel from companies of Coast Artillery Oahu. as follows:
HHB, HHD&CT
Gun Battalion HHB
A Battery
B Battery
C Battery
D Battery (SL)
Machine Gun Battalion HHB
E Battery
F Battery
G Battery
H Battery (SL)
Regiment moved to Fort Shafter[1] 27 January 1922 searchlight batteries switched with A, and D batteries.
Redesignated 64th Artillery (AA) (CAC) 2 June 1922
Redesignated 64th Coast Artillery (AA) Regiment 1 July 1924
Reorganized 1 November 1925 with 3 battalions as follows:
HHB and Service Battery
1st BN HHB
A Battery
B Battery
C Battery
2nd BN HHB
D Battery
E Battery
F Battery
3rd BN HHB
G Battery
H Battery
I Battery
Batteries K and L added 1 July 1928, also a Band.
Battery F assigned to Baker Island 1 August 1943, redesignated Battery D, 751st Coast Artillery (AA) Battalion (Sep).
Inactivated 12 December 1943 and broken up as follows:
A round of Antiaircraft Artillery ammunition Gules winged Or. The insignia is 1 inch (2.54 cm) in height.
Symbolism
The winged antiaircraft artillery projectiles represent the mission of the organization.
Background
The distinctive unit insignia was originally approved for the 64th Artillery Regiment, Coast Artillery Corps on 25 July 1922. It was amended to correct the description on 10 January 1923. It was amended to specify how it was worn on 5 November 1931. The insignia was redesignated for the 64th Antiaircraft Artillery Battalion on 18 November 1955.
The coat of arms was originally approved for the Hawaiian Antiaircraft Artillery Regiment, Coast Artillery Corps on 8 March 1922. It was redesignated for the 64th Regiment, Coast Artillery Corps on 10 June 1922. It was redesignated for the 64th Antiaircraft Artillery Gun Battalion on 5 January 1944. The insignia was redesignated for the 64th Antiaircraft Artillery Battalion on 18 November 1955.