There were a lot of things that happened in January of 1940. This a chronological order of events that occurred in January on the topic of the Second World War (see related link below for cited link where info came from):
One major event that happened on May 14, 1940 was that the Netherlands surrendered to the German forces during World War Two.
World War I was raging and many things happened in January 1918. This cannot be answered accurately without knowing either where or who was involved.
War crimes of the Wehrmacht happened in 1940.
Probably between the fall of France (June 1940) and the Battle of Stalingrad (January 1943).
1940
World War II happened in the 1940's, and it was maddening indeed.
1916 because of World War 1 1940 & 1944 because of World War 2
for the second world war, 8th January 1940
One major event that happened on May 14, 1940 was that the Netherlands surrendered to the German forces during World War Two.
German occupation of Luxembourg in World War II happened on 1940-05-10.
West Africa Campaign - World War II - happened on 1940-11-12.
The 1940s was when World War 2 happened. The war then led to the Great Depression. Many people were effected.
Phoney War happened in 1940.
World War II was one American event that happened in September of 1940. Also, the Great Depression was coming to an end during this month and time frame.
World War I was raging and many things happened in January 1918. This cannot be answered accurately without knowing either where or who was involved.
War crimes of the Wehrmacht happened in 1940.
World War 2 happened of course. Can't think of much else at the moment.