This microbadge was created in memoriam of Nicholas Courtney, who passed away on February 22th, 2011. We shall miss him terribly!
Brigadier Sir Alistair Gordon Lethbridge-Stewart, generally referred to simply as the Brigadier, is a fictional character in the British science fiction television series Doctor Who, played by Nicholas Courtney. He is one of the founders of UNIT (United Nations Intelligence Taskforce), an international organisation that defends Earth from alien threats, and serves as commander of the British contingent. Source: Wikipedia, "Brigadier Lethbridge-Stewart", available under the CC-BY-SA License.