Before November 1916, this country was considered the most neutral country during WW1 but sadly had its own Civil War in 1963
The country you are referring to is Ireland.
Ireland remained neutral during World War I and was often referred to as a "neutral oasis" in Europe during that time. However, in 1916, Ireland experienced its own conflict known as the Easter Rising, which was a rebellion against British rule. The uprising was quickly suppressed by the British, leading to a period of political turmoil and eventually the Irish War of Independence in 1919. The Irish Civil War then followed in 1922-1923, which arose from disagreements over the terms of the Anglo-Irish Treaty that ended the War of Independence.