Prince George becomes absolute monarch of the Cretan State. Date: April 1, 1900 Read more on Wikipedia → 📅 Other events on April 1 📅 Events on this day in 1900 📅 On This Day (Today)

The Territorial Force (renamed Territorial Army in 1920) is formed as a volunteer reserve component of the British Army. Date: April 1, 1908 Read more on Wikipedia → 📅 Other events on April 1 📅 Events on this day in 1908 📅 On This Day (Today)

The Royal Air Force is created by the merger of the Royal Flying Corps and the Royal Naval Air Service. Date: April 1, 1918 Read more on Wikipedia → 📅 Other events on April 1 📅 Events on this day in 1918 📅 On This Day (Today)

In newly formed Northern Ireland, six Catholics are murdered in the Arnon Street killings, one week after six others were killed in the McMahon killings. Date: April 1, 1922 Read more on Wikipedia → 📅 Other events on April 1 📅 Events on this day in 1922 📅 On This Day (Today)

The Royal Canadian Air Force is formed. Date: April 1, 1924 Read more on Wikipedia → 📅 Other events on April 1 📅 Events on this day in 1924 📅 On This Day (Today)

Adolf Hitler is sentenced to five years fortress confinement for his participation in the "Beer Hall Putsch" but spends only nine months in jail. Date: April 1, 1924 Read more on Wikipedia → 📅 Other events on April 1 📅 Events on this day in 1924 📅 On This Day (Today)

The recently elected Nazis under Julius Streicher organize a one-day boycott of all Jewish-owned businesses in Germany, ushering in a series of anti-Semitic acts. Date: April 1, 1933 Read more on Wikipedia → 📅 Other events on April 1 📅 Events on this day in 1933 📅 On This Day (Today)

India's central banking institution, the Reserve Bank of India, is formed. Date: April 1, 1935 Read more on Wikipedia → 📅 Other events on April 1 📅 Events on this day in 1935 📅 On This Day (Today)

The Royal New Zealand Air Force is formed as an independent service. Date: April 1, 1937 Read more on Wikipedia → 📅 Other events on April 1 📅 Events on this day in 1937 📅 On This Day (Today)

Aden becomes a British crown colony. Date: April 1, 1937 Read more on Wikipedia → 📅 Other events on April 1 📅 Events on this day in 1937 📅 On This Day (Today)