The ‘A’ battery's lineage is as follows:

1871 – 1876 ‘A’ Battery, New South Wales Artillery

1876 – 1891 No 1 Battery, New South Wales Artillery

1891 – 1893 The Field Battery, New South Wales Artillery

1893 – 1899 'A' Battery, New South Wales Artillery

1899 – 1902 'A' Battery, New South Wales Regiment of Royal Australian Artillery (Field)

1902 – 1903 'A' Battery, Royal Australian Artillery

1903 – 1910 'A' Instructional Cadre, Royal Australian Artillery Regiment

1910 – 1911 No 1 Battery, Australian Field Artillery (Permanent)

1911 – 1920 No 1 Battery, Royal Australian Field Artillery

1920 – 1927 1st Battery, Royal Australian Field Artillery

1927 – 1930 1st Field Battery, Royal Australian Artillery

1930 – 1936 1st Field Cadre, Royal Australian Artillery

1936 – 1939 1st Field Cadre, Royal Australian Artillery Regiment

1939 – 1942 'A' Field Battery, Royal Australian Artillery Regiment

1942 – 1943 Depot Battery, LHQ School of Artillery (Field, Medium, Survey)

1943            2nd Aust Mountain Battery (Mechanised)

1943 – 1945 2nd Aust Mountain Battery (Mechanised) (Australian Imperial Force)

1945 – 1946 2nd Mountain Battery

1946 – 1949 'A' Field Battery, Royal Australian Artillery Regiment

1949 – 1955 'A' Field Battery, 1st Field Regiment, Royal Australian Artillery

1955 – 1958 100 (A) Field Battery, Royal Australian Artillery

1958 – 1965 'A' Field Battery, 1st Field Regiment, Royal Australian Artillery

1965 – 1966 'A' Field Battery, 45th Light Regiment, Royal Artillery

1966 – 1967 'A' Field Battery, 6th Light Regiment, Royal Artillery

1967 – 1969 'A' Field Battery, 19th Composite Regiment, Royal Australian Artillery

1969 – 1974 'A' Field Battery, 12th Field Regiment, Royal Australian Artillery

1974 – 1999 'A' Field Battery, 8th/12th Medium Regiment, Royal Australian Artillery

1999 – 2002 'A' Field Battery, Royal Australian Artillery

2002 – 2010 'A' Field Battery, 4th Field Regiment, Royal Australian Artillery

2011 – 2012 'A' Gun Battery, 1st Regiment, Royal Australian Artillery

2012 - present      'A' Battery, 1st Regiment, Royal Australian Artillery