Details from IMDB:

Darkest Hour (2017)

PG-13 | | BiographyDramaHistory | 22 December 2017 (USA)
7.4/10

13,780

During the early days of World War II, the fate of Western Europe hangs on the newly-appointed British Prime Minister Winston Churchill, who must decide whether to negotiate with Hitler, or fight on against incredible odds.

Director:

Joe Wright

Initial Thoughts:
I’ve always been fascinated with World War II. It’s a very important part of our history and always worth studying. So there was no doubt when I heard Gary Oldman (whom I love) would be playing Churchill that I would be seeing this. He always takes a good roll and is perhaps the most versatile actor alive today, so once it was released here we went to see it.
Main Points:
Churchill was a fascinating person, he was a working alcoholic, chain smoked cigars, was grumpy, up all hours of the night and was so drunk that there were times where actors had to be hired to finish read his speeches on air. Despite all that he was also brilliant, courageous, determined and certainly one of the great British heroes. They present him with all his flaws and quickly show that while he dreamed of becoming Prime Minister his whole life, when he was finally given it the timing was terrible and basically they couldn’t agree on anyone else.
This character study is paired with the intensity of World War II, a war for a few weeks Britain was losing, badly. There is lots of political pressure and secret talks of getting Churchill ousted, along with the real consideration of the collapse of the British army and the surrender of Britain to Germany. The fact that the King of England had to consider fleeing the country to rule in exile also showed just how desperate things became in Britain.
I really enjoyed this movie, the acting is good for  all the rest of the cast but Oldman shows what a great actor can do. Through some amazing makeup (not CGI) and a fantastic performance, Oldman truly becomes Churchill for the movie, I was familiar with this time in history but found I learned plenty of other details I didn’t know before. While there isn’t much action, the story and pacing of the film does the job well.
Final Thoughts:
There is almost no perfect movies and this one certainly isn’t. At a running time of over 2 hours I found it did drag in a few spots, still overall an excellent film that I highly recommend (just not for children, ages 14+). I give it solid 8 out of 10. While I had hoped Hugh Jackman would win for Logan (which I still think is the best movie of the year for me) I can admit Oldman is the one who deserves best actor, see it for his performance if for no other reason.