WHAT ALL HAPPENED JANUARY TO APRIL 1937
Find out what all happened January to April 1937

The human-powered aircraft, Pedaliante, flew 1 kilometre (0.62 mi) outside Milan. (18. March 1937)

Spanish Civil War: Spanish Republican forces defeated the Italians at the Battle of Guadalajara. (18. March 1937)

The League of Nations bans foreign national "volunteers" in the Spanish Civil War. (21. February 1937)

In Moscow, 17 leading Communists go on trial accused of participating in a plot led by Leon Trotsky to overthrow Joseph Stalin's regime and assassinate its leaders. (23. January 1937)

Spanish Civil War: Nationalists and Republican both withdraw after suffering heavy losses, ending the Second Battle of the Corunna Road. (15. January 1937)

The Guiding Light debuts on NBC radio from Chicago. In 1952 it moves to CBS television, where it remains until Sept. 18, 2009. (25. January 1937)

A sit-down strike ends when General Motors recognizes the United Auto Workers. (11. February 1937)

Wallace H. Carothers receives a United States patent for nylon. (16. February 1937)

President Franklin D. Roosevelt proposes a plan to enlarge the Supreme Court of the United States. (5. February 1937)

Spanish Civil War: Jaén, Spain is bombed by Nazi forces. (1. April 1937)

Sir Frank Whittle ground-tests the first jet engine designed to power an aircraft, at Rugby, England. (12. April 1937)

Spanish Civil War: Guernica (or Gernika in Basque), Spain is bombed by German Luftwaffe. (26. April 1937)

Aden becomes a British crown colony. (1. April 1937)

The Kamikaze arrives at Croydon Airport in London – it is the first Japanese-built aircraft to fly to Europe. (9. April 1937)

The New London School explosion killed 300 people, mostly children. (18. March 1937)

Howard Hughes sets a new air record by flying from Los Angeles, California to New York City in 7 hours, 28 minutes, 25 seconds. (19. January 1937)

Yekatit 12: During a public ceremony at the Viceregal Palace (the former Imperial residence) in Addis Ababa, Ethiopia, two Ethiopian nationalists of Eritrean origin attempt to kill viceroy Rodolfo Graziani with a number of grenades. (19. February 1937)

Safety glass in vehicle windscreens becomes mandatory in the United Kingdom. (1. January 1937)

The Philippines holds a plebiscite for Filipino women on whether they should be extended the right to suffrage; over 90% would vote in the affirmative. (30. April 1937)

Spanish Civil War: The Battle of Guadalajara begins. (8. March 1937)