CBI - China: Day 28 of 154 of the Japanese Invasion of Manchuria.
1936 — , October 15
Spain: Day 91 of 985 of the Spanish Civil War.
1937 — , October 15
Spain: Day 456 of 985 of the Spanish Civil War.
CBI - China: Day 101 of 2,987 of the 2nd Sino-Japanese War.
Day 64 of 106 of the 2nd Battle of Shanghai.
Day 45 of 70 of the Battle of Taiyuan.
1938 — , October 15
Spain: Day 821 of 985 of the Spanish Civil War.
Czechoslovakia: German troops occupy the Sudetenland, the Czech government resigns.
CBI - China: Day 466 of 2,987 of the 2nd Sino-Japanese War.
Day 127 of 139 of the Battle of Wuhan.
Day 4 of 81 of Japan's Operation GUANGDONG.
1939 — , October 15
CBI - China: Day 831 of 2,987 of the 2nd Sino-Japanese War.
1940 — , October 15
ETO - UK: Day 40 of 258 of the Blitz. Bombs rip into the Balham tube station and 64 people are killed.
ETO - UK: Day 98 of 114 of the Battle of Britain.
MTO: Italian submarine TOTI sinks the British submarine RAINBOW.
East Africa: Day 128 of 537 of Italy's East African campaign in the lands south of Egypt.
CBI - China: Day 1,197 of 2,987 of the 2nd Sino-Japanese War.
Day 336 of 381 of the Battle of South Guangxi.
CBI - Thailand: Day 15 of 221 of the Franco-Thai War (Vichy France vs Thailand).
1941 — , October 15
Russian Front - Finland: Day 109 of 142 of Operation SILVER FOX, a joint German-Finnish campaign to capture the Russian port of Murmansk in the Arctic.
Russian Front - Finland: Day 107 of 140 of Operation ARCTIC FOX, a joint German-Finnish campaign against Soviet Northern Front defenses at Salla, Finland.
Russian Front - Finland: Day 116 of 164 of the Battle of Hanko. The Soviets will be forced off their leased naval base.
Russian Front: Day 116 of 167 of Germany's Operation BARBAROSSA.
Russian Front - North: Day 38 of 872 of the Siege of Leningrad.
Russian Front - Center: Day 14 of 98 of the Battle of Moscow.
Russian Front - South: Day 69 of 70 of the Siege of Odessa, Ukraine.
MTO - Libya: Day 189 of 256 of the Siege of Tobruk.
East Africa: Day 493 of 537 of Italy's East African campaign in the lands south of Egypt.
CBI - China: Day 1,562 of 2,987 of the 2nd Sino-Japanese War.
1942 — , October 15
ETO: US 14th Fighter Group, with twin-boom Lockheed P-38 Lightnings, makes its debut escorting the RAF on a raid into France.
Lockheed P-38 Lightning YIPPEE with its distinctive twin booms
Named the "fork-tailed devil" by the Luftwaffe and "two planes, one pilot" by the Japanese, the P-38 Lightning was used in a number of roles, including dive bombing, level bombing, ground-attack, night fighting, photo reconnaissance missions, and extensively as a long-range escort fighter when equipped with drop tanks under its wings.
The P-38 was the only American fighter aircraft in production throughout American involvement in the war, from Pearl Harbor to V-J Day.