When Pam is creating a tontine for ISIS employees the name Cody 2 can be seen on the bottom of the match up list. This is a reference to another of Adam Reed's productions, Frisky Dingo.
As Woodhouse begins to describe his relationship with Reggie, Archer comments, "Ew, gross...Didn't Oscar Wilde get hard labor for that?", referring to Oscar Wilde's imprisonment on charges of sodomy .
While Cheryl/Carol is spraying aeresol disinfectant in the office (to kill all the baby germs) Pam quips "Knock it off Union Carbide." Union Carbide is an aeresol company that has had several major disasters in the U.S. and India.
Woodhouse describes Reggie as "in the words of Henley, 'bloodied, but unbowed." This is a quote from the poem Invictus by British poet William Ernest Henley .
When offered a canteen of water, Reggie responds "Oh, I never drink the stuff. Fish fuck in it." This is a famous rationale coined by the comedian, actor, and proud drunk, W.C. Fields .
Reggie asks Woodhouse for a cigarette, and Woodhouse proceeds to try and light it by match. The first match is blown out, but draws the attention of a sniper. The second attempt also is blown out, but allows the sniper to tighten his aim. After successfully lighting the cigarette on the 3rd match, Reggie is shot by the sniper. This is twist on a superstition about lighting 3 cigarettes off of 1 match . The superstition was thought to originate from soldiers during WWI, which is false, but was widely passed around as truth.
It is revealed that Woodhouse was discharged from the RFC for collecting large numbers of enemy scalps. This is likely a reference to the film Legends of the Fall, in which Brad Pitts character, Tristan Ludlow, goes on a scalping spree and is subsequently discharged for it.
As Archer leaves the office to go "save" Woodhouse, Cyril quips about Archer's "hooker baby", prompting Archer to throw a cat statue at Cyril's head, knocking him to the ground. The statue is of Maneki Neko, a Japanese figure which is thought to bring good luck to its owner.
"Bloody April" was a real historical event which occurred in 1917, beginning on April 9 with the opening of the Battle of Arras. During the next month, RAF losses were roughly three times German losses for the same period.
Wenslydale, Stilton, Gloucester and Buxton are all English cheeses, each named after their places of origin. Buxton cheese is not as well known in England as the others. Although British Lords choose an official name and sometimes use a place name, knights are given the title Sir (like Wenslydale and Stilton) and keep their family names.
The heading for an article on Woodhouse's newspaper reads "Woodrow To Testify." This is in reference to a speech given by President Woodrow Wilson on September 5, 1919. He is quoted saying, "LET ME TESTIFY TO THIS, MY fellow citizens..." and goes on to mock German spies by insinuating he was in disbelief to learn that they had the better intelligence agency in Europe.