- The Londonderry Regiment was a Regiment of Irish Militia raised in co. Londonderry, raised in 1793 to defend against a planned Irish insurrection and French invasion. Officially named 16th Londonderry Regiment, Irish Militia. The Militia was disbanded in 1816 after the defeat of Napoleon.
- Militia units were not to be stationed in their home counties and so between 1793, when they were first embodied, and 1816, when they were stood down, they served in many different stations across Ireland while some served in England. Many men transferred to the Regular Army as the Militia began to be seen as a pool of potential recruits for the Regular Army.
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