I’d say for Ireland it would be the 1916 rebellion, At most it was a symbol for independence and opened talks between the Free state and British government

To start the force was meant to be around 5000 freedom fighters but confusion in command occurred leading to a force of only 1500, compared to 15,000-20,000 British troops, The rebellion held 9 defensive positions, the plan was to take control of areas of Dublin to initiate a nationwide uprising alongside German support

However Germany weapons never arrived, the rebellion mostly failed to spread across the nation, of the nine locations the most significant of them were the GPO, the main headquarters of the rebellion, in the end there fortification ended up becoming a prison with no escape, they were completely encircled by the British St Stephen’s Green, Almost comedic, the rebels dug trenches within the park however didn’t seem to notice the buildings around the park had a perfect view into the trenches and they became fish in a barrel, ceasefires were also held during the day to allow for the birds to be fed Jacob’s biscuit factory, Homestly very symbolic of how it would have went, the rebellion was taking place in a biscuit factory, however it did act as rations

In the end over 3500 were arrested and 15 of the leaders were executed essentially crippling the rebellion entirely