The first Academy Award (Oscar) for Best Documentary was awarded in 1942.
AACTA Award for Best Direction in a Documentary was created in 1998.
AACTA Award for Best Documentary Series was created in 2009.
An Inconvenient Truth won the Oscar for Best Documentary of 2006.
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The 2015 Best Documentary - Feature Oscar went to Citizenfour.
German Film Award for Best Documentary Film was created in 2000.
AACTA Award for Best Feature Length Documentary was created in 2009.
Undefeated won the Oscar for Best Documentary in 2012. The documentary focused on a high school football team in Georgia and had not been considered the top contender for the prize.
Best Boy won the Oscar for Documentary - Feature - in 1979.
AACTA Award for Best Documentary Under One Hour was created in 2009.
The first feature-length documentary film is generally considered to be Robert Flaherty's Nanook of the North, released in 1922. For a good overview of documentary film history, see the link below.