149 (Mixed) Heavy Anti-Aircraft Regiment RA (TA) was formed on the Wirral in February 1942. It became a non-mixed Regiment in August 1945. The Regiment served its entire time in Anti-Aircraft Command. 149 (Mixed) Heavy Anti-Aircraft Regiment RA (TA) was considered a War Formed Regiment in January 1947 and re-designated as 105 Heavy Anti-Aircraft Regiment RA in April that year.
Illustrations of the formation badges under which a unit served or supported are given. This is no guarantee that the unit used this formations badge.
|Feb 42||Formed||Wirral, UK|
|Apr 42||4 Anti-Aircraft Division, 33 Anti-Aircraft Brigade||North West England|
|Sep 42||4 Anti-Aircraft Group, 44 Anti-Aircraft Brigade||North West England|
|Jun 43||6 Anti-Aircraft Group, 30 Anti-Aircraft Brigade||North East & Scotland|
|Apr 44||5 Anti-Aircraft Group, 30 Anti-Aircraft Brigade||Eastern England|
|Feb 42||506 (Mixed), 507 (Mixed), 512 (Mixed)|
|Sep 42||506 (Mixed), 507 (Mixed), 512 (Mixed), 581 (Mixed)|
|Apr 44||506 (M), 507 (M), 512 (M)|