| July 4th 1941 | | Howard Florey & Norman Heatley meet for 1st time, 11 days later they successfully recreate penicillin
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| July 4th 1941 | | Politburo of Yugoslav communist party reorganizes
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| July 4th 1941 | | Latvia partisans shoot 416 Jews dead
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| July 4th 1942 | | 1st American bombing mission over enemy-occupied Europe (WW II)
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| July 4th 1942 | | US air offensive against nazi-Germany begins
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| July 4th 1944 | | Gestapo arrests German Social Democrat Julius Leber
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| July 4th 1944 | | Allied assault on Carpiquet airport at Caen
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| July 4th 1944 | | 1st Japanese kamikaze attack, US fleet near Iwo Jima
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| July 4th 1944 | | 1,100 US guns fire 4th of July salute at German lines in Normandy
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| July 4th 1946 | | Anti Jewish riots in Kielce Poland, 42 die
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| July 4th 1946 | | Philippines gains independence from US
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| July 4th 1947 | | 61st Wimbledon Mens Tennis: Jack Kramer beats Tom P Brown (61 63 62)
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| July 4th 1950 | | Braves Sid Gordon ties season grand slam record with 4
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| July 4th 1950 | | Truman signs public law 600 (Puerto Ricans write own constitution)
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| July 4th 1952 | | Canadain Currency, Mint & Exchange Fund Act allows gold coins of $5, $10, and $20 to be minted
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