Great Britain

The Royal Irish Regiment

from Regiments of Foot: 27, 83, 86, 87, 89, and 108

United Kingdom of Great Britain and Northern Ireland

1^st Battalion,
The Royal Inniskilling Fusiliers
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1^st Battalion,
The Royal Ulster Rifles
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1^st Battalion,
The Royal Irish Fusiliers
(Princess Victoria’s)
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1948:

part of
The North Irish Brigade

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part of
The North Irish Brigade

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part of
The North Irish Brigade

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1958:

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1968:

1^st Battalion,

2^nd Battalion,

3^rd Battalion,

The Royal Irish Rangers
(27^th (Inniskilling), 83^rd and 87^th)

part of
The King’s Division

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1969:

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disbanded

1970:

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The Ulster Defence Regiment

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1992:

1^st Battalion,

2^nd Battalion,

3^rd (County Down) Battalion,
4^th (County Fermanagh and County Tyrone) Battalion,
5^th (County Londonderry) Battalion,
6^th (County Armagh) Battalion,
7^th (City of Belfast) Battalion,
8^th (County Tyrone) Battalion,
9^th (County Antrim) Battalion,

The Royal Irish Regiment
(27^th (Inniskilling), 83^rd and 87^th and the Ulster Defence Regiment)

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1993:

1^st Battalion,
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1999:

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3^rd Bⁿ and 6^th Bⁿ merged into 3^rd Bⁿ
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2001:

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7^th Bⁿ and 9^th Bⁿ merged into 2^nd Bⁿ
3^rd Bⁿ and 8^th Bⁿ merged into 3^rd Bⁿ
4^th Bⁿ and 5^th Bⁿ merged into 4^th Bⁿ
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2007:

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2^nd Bⁿ, 3^rd Bⁿ and 4^th Bⁿ disbanded

2023:

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