Today in World War II History—May 4, 1942

SBD Dauntless returning to USS Yorktown after an attack on Tulagi, Solomon Islands, 4 May 1942 (US National Archives: 80-G-20515)
80 Years Ago—May 4, 1942: Battle of the Coral Sea begins: US Navy intercepts Japanese fleet set to invade Port Moresby, New Guinea: first carrier vs. carrier battle in history and the first battle where enemy ships never see each other.
Off the Florida Keys, German U-boat U-507 sinks US freighter Norlindo, the first sinking in the Gulf of Mexico.
Vilhelm Buhl becomes Prime Minister of (Nazi-occupied) Denmark.