Who plays Colonel Mackenzie in the Sam Mendes's film "1917"?

In Sam Mendes's film "1917" (2019), the actor who plays Colonel Mackenzie is Benedict Cumberbatch. Benedict Timothy Carlton Cumberbatch (aka Benedict Cumberbatch) is an English actor. He is a graduate of the Victoria University of Manchester, and he continued his training to be an actor at the London Academy of Music and Dramatic Art, obtaining a Master of Arts in Classical Acting.

Cumberbatch was born on July 19, 1976, in London, England. He is now age 43. During his active professional career of approximately 20 years, he has received numerous accolades, including the Laurence Olivier Award for Best Actor for "Frankenstein" (2018) and the Primetime Emmy Award for Outstanding Lead Actor in a Miniseries or a Movie for "Sherlock". His performance in "The Imitation Game" (2014) earned him a nomination for the Academy Award for Best Actor. In 2015 he was appointed Commander of the Order of the British Empire.

It is a solemn war movie and tells a focused, briskly paced story. The film is based on a harrowing true World War I story, provided to director Sam Mendes by his grandfather. Facts in this instance concern British Army troops at the front line. They are about to walk into an ambush. This fact is known and told to key staff by a fictional General Erinmore (Colin Firth). In a race against time, two British soldiers must cross over into enemy territory to deliver a message that could potentially save 1,600 of their fellow comrades from an ambush.