Also today in history:
- 1898: John Philip Holland successfully tested his motorized submarine off Staten Island. Here's a photo of Holland in his sub, on HistoryNet.com.
- 1939: The Battle of Nanchang began between 200,000 Kuomintang troops under General Xue Yue and 160,000 Japanese army Lt. Gen. Yasuji Okamura. It raged on until May 9, ending in Japanese victory with 51,328 Chinese casualties to 24,000 Japanese.
- 1960: President Dwight D. Eisenhower formed an anti-Castro Cuban army-in-exile under the supervision of the Central Intelligence Agency.