Great Britain (Militia)

Antrim - Armargh - Londonderry - Tyrone

	Introduction of Artillery Militia by the Militia Act 1852
1854:	The Antrim Artillery Militia │	The Armagh Artillery Militia │
1855:	1st, or Antrim Artillery Militia │ │	2nd, or Armagh Artillery Militia │ │	21st, or Londonderry Artillery Militia │ │	28th, or Tyrone Artillery Militia │ │
1875:	│ │ │	21st, or Mid-Ulster Artillery Militia │
	│ │ │ │	│ │ │ │			from 4th Battalion, The Royal Inniskilling Fusiliers │
	Creation of the Divisons, Royal Artillery
	│	│			│
1882:	2nd Brigade, North Irish Division, Royal Artillery │	6th Brigade, North Irish Division, Royal Artillery │			9th Brigade, North Irish Division, Royal Artillery │
	Regrouping into three large divisions
	│	│			│
1889:	The Antrim Artillery (Southern Division), Royal Artillery │	The Mid-Ulster Artillery (Southern Division), Royal Artillery │			The Londonderry Artillery (Southern Division), Royal Artillery │
	Transferred to the Royal Garrison Artillery
	│	│			│
1899:	The Antrim Artillery (Southern Division), Royal Garrison Artillery │	The Mid-Ulster Artillery (Southern Division), Royal Garrison Artillery │			The Londonderry Artillery (Southern Division), Royal Garrison Artillery │
	Division system abolished
	│	│			│
1902:	The Antrim Royal Garrison Artillery (Militia)	The Mid-Ulster Royal Garrison Artillery (Militia)			The Londonderry Royal Garrison Artillery (Militia)
	│	│			│
	Creation of the Special Reserve
	│	│			│
1908:	The Antrim Royal Garrison Artillery (Special Reserve) │	The Mid-Ulster Royal Field (Reserve) Artillery │ │			The Londonderry Royal Field (Reserve) Artillery │ │
1909:	│ │	disbanded			disbanded
	│
1919:	suspended animation │
1924:	The Antrim Militia, Royal Artillery │
1953:	disbanded