^The Kingdom of Italy was an axis power until it changed sides to the Allies after an armistice in 1943. After the armistice, the Italian Social Republic was set up as a German puppet state still under Mussolini.
^China had been fighting an undeclared war against Japan since 1937, with various other conflicts since 1931. On December 9, 1941, they officially joined the war
^Yugoslavia was occupied after an invasion, but there were prominent partisan groups that continued fighting
^The emperor was the titular leader of Japan and had the final say on decisions, but his power was still (somewhat) limited. The Prime Minister (Fumimaro Konoe and later Hideki Tojo for most of the war) held immense political power, and thus the emperor was not a dictator in the way Hitler or Mussolini were[2]
^Victor Emmanuel III was the Italian head of state and did overrule Mussolini on certain occasions (such as refusing to join the Second World War until 1940 and even deposing him in 1943), but Mussolini used more de facto power and influence than the king
^China was fragmented at the time due to a halted civil war and legacies of the warlord era; thus, other leaders such as Mao Zedong of the Chinese Communists and various warlords (such as Li Zongren, Yan Xishan and (initially) Zhang Xueliang) had significant power. However, Kai-shek was the leader of the nationalists which allied with the communists and controlled most of China during the Second World War
^Dunnigan, James; Albert Nofi. Dirty Little Secrets of World War II: Military Information No One Told You About the Greatest, Most Terrible War in History, William Morrow & Company, 1994. ISBN0-688-12235-3
The Second World War in Colour (1999) is a three episode documentary showing unique footage in color (Imdb link)
Battlefield (documentary series) is a television documentary series initially issued in 1994–1995 that explores many of the most important battles fought during the Second World War.
The War (2007) is 7-part PBS documentary recounting the experiences of a number of individuals from American communities.