[10] In April 1642, Felim O'Neill, leading the rebellion, commanded that his forces gather at Tandragee to prepare to confront the Scots Covenanters who had landed in Ulster.

[13] The Tandragee Volunteers, organised by Captain Nicholas Johnston in 1779, were fitted with scarlet uniforms faced with white details.

[13] From the introduction of the First Home Rule Bill in 1886, the Protestant community in Tandragee strongly opposed the idea and played a role in the establishment of a proposed 'Orange Army'.

An effigy of Prime Minister William Gladstone was set alight in the town following an anti-Home Rule demonstration.

In September, under the supervision of William Montagu, 9th Duke of Manchester, members of the Tandragee Club engaged in drills prior to the Ulster Covenant.

By December 1912, the County Armagh Committee included several figures from the business sector, the legal field, and the local aristocracy.

[13] Tandragee was identified by the Royal Irish Constabulary in 1912 as one of ten locations where unionist paramilitary drills were occurring.

[13] A mural commemorating the Third Battalion of the County Armagh Regiment UVF is located at the junction of Montague Street and Ballymore Road in Tandragee.

A public initiative formed to integrate the Ulster Volunteer Force into Kitchener's new Army, with hundreds enlisting from the Tandragee District.

Between 60 and 70 volunteers, led by the 'Catch-my-Pal' flute band, paraded through Tandragee before departing from Madden Bridge Railway Station.

After the hymn 'O God Our Help in Ages Past' was performed, Major Shellington MP, a former officer of the 9th Royal Irish Fusiliers, unveiled the memorial.

[21] In 1943, Alexander Montagu, the 10th Duke of Manchester, leased Tandragee Castle to the United States Army for use during World War II.

[22] Tandragee's links to the primary Belfast-Dublin railway, along with its proximity to the River Cusher and Newry Canal, positioned it as a strategic staging area for the United States Army in 1943.

Every year on The Twelfth (12 July), the lodges within the district participate in the "Ring Ceremony" at the square, which includes a brief religious service.

The inaugural Orange parades in Tandragee occurred on 12 July 1796, coinciding with the first Twelfth demonstration held at Lurgan Park.

It shares similarities with The Hills of Glensuili, differing mainly in place names and a few words that alter the political perspective.

In the lyrics, the singer expresses to those witnessing his departure from Tandragee his desire for the Orange flag to soon be raised over its hills.

[49][50] Tandragee Free Presbyterian Church was formed in 1967 and is located off the Portadown Road in the Willowfield housing estate.

[52] The enthusiasm for this style of preaching was so significant that, as the mission drew to a close, several members of the congregation approached Rev.

Paisley with a request to establish a separate Protestant witness, specifically a Free Presbyterian Church, in Tandragee.

On Easter Sunday, 26 March 1967, Paisley delivered a sermon at the Temperance Hall, leading to the formation of the Tandragee Free Presbyterian Church.

[53] On 18 October 2008, a new church complex spanning 16,000 sq ft (1,500 m2) was opened to serve the growing congregation, located off the Portadown Road in the Willowfield housing estate.

[51] This facility features a sanctuary with seating for 450, a church hall that can accommodate 350 people, a prayer room for 130, and a youth fellowship area designed for 70 participants.

The complex also has a minister's office, a space for parents with infants during services, committee room, garage, storage areas, recording studio and two kitchens.

[54] Approximately 2 years following the establishment of the church, the members resolved to construct a meeting house, contingent upon securing a suitable location.

The Duke of Manchester granted a lease for a parcel of land measuring 1 Rood and 27 perches, which housed an existing structure.

[55] The church encountered criticism and faced a prosecution file in November 2020 for conducting services that violated COVID-19 restrictions.

[66] Thomas Sinton opened a mill in town in the 1880s, an expansion of his firm from its original premises at nearby Laurelvale – a model village which he built.

In November 2019, Prime Minister Boris Johnson toured UK businesses, which included a visit to the Tayto factory.

Of these:[79] For the 2001 census, Tandragee was classified as an intermediate settlement by the NI Statistics and Research Agency (NISRA) (i.e. with population between 2,050 and 4,500 people).