During the Irish Civil War, the Irish Republican Army (IRA) under Michael Kilroy take Ballina, County Mayo, in a surprise attack on September 12, 1922 while the National Army troops there are at a Mass service for a comrade killed in the fighting.
In Mayo, Republicans organise themselves into Flying Columns of thirty-five men. The Columns are usually named after their Commanders such as Dr. John Madden in the West, Frank Carty in the Ox Mountains or Tom Carney in East Mayo. Each Column contains an explosives specialist, machine gunners, signalers, first aiders and riflemen. The field of operations is considerably wide. This causes considerable confusion among National Army Garrisons in the main towns of County Mayo. When they eventually reach the sites of ambushes, railways blown up or outposts attacked, the Republican Columns are long gone.
The Republicans also undertake large-scale operations such as “The Storming of Ballina” which occurs on Tuesday, September 12, 1922. The Republicans attack while the majority of the National Army Garrison is at a funeral Mass. Using a captured armoured car the Republicans fight their way through the town clearing key buildings as they go. A large mine is detonated at the town post office with the resulting shockwave throwing people through the air and shattering windows in the nearby streets. The Republicans celebrate their victory by relieving many of the shops of their goods. The Republicans then divide their forces in two. One Unit under Michael Kilroy heads west out towards Belmullet. The other Unit heads to a Republican HQ and supply dump at Lough Talt.
Brigadier-General Lawlor gathers all available National Army Forces in County Mayo for a counter strike against the Republicans. Two separate National Army Columns set out from Ballina. The first, under Brigadier-General Lawlor pursues the Republicans heading for Lough Talt. The Republicans fight a strong rearguard action through the Ox Mountains as they withdraw from Lough Talt. The fighting, which continues throughout the day, sees Lawlor wounded twice and one of Mayo’s own heroes of the War of Independence, Commandant-General Joe Ring, killed in action.
Meanwhile, Brigadier-General Neary leads a second National Army Column after General Kilroy’s retreating Column across north Mayo. Neary’s men run straight into a classic IRA ambush at Glenamoy. Six National Army troops are killed and many captured along with forty-five to fifty rifles. The National Army troops are in such a disheveled state Kilroy orders them fed and released. It is a valuable insight into the morale of the army facing the Republicans. Uniforms including underwear, boots and food are in short supply. Many have not been paid for weeks.
The Republican operations at Ballina, Lough Talt and Glenamoy boost their morale but leaves the National Army Commanders bitter and out for revenge. This bitterness is soon reflected in combat. National Army troops begin mixing ground glass with the gunpowder in their rifle rounds. In response, the Republicans began using “dum-dum” or expanding bullets.
(From: Stair na hÉireann | History of Ireland, http://www.stairnaheireann.net, September 12, 2017 | Pictured: Michael Kilroy)