Question: What was the number of centurions they made for Union Station in Washington, DC?
About the article "Union Station (Washington, D.C.)", section "Architecture".

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Each century had a precedence within the cohort.
Centurions' seniority within the cohort and legion depended on the position within the legion of the century they were in charge of, which often took their name from their centurion.
Centurions began by leading junior centuries before being promoted to leading a more senior one.
Promotion usually came with experience, or at least length of service, but many still never made it as far as leading a 1st cohort.
Yet for centurions who showed, say, particularly conspicuous bravery during battle, there was the opportunity to be promoted several grades at once.
For example, Julius Caesar's reward for a centurion who had greatly pleased him was to advance him eight grades.
Promotion through the various grades often meant transferring to another legion.
The precedence during the times of the manipular legion, commanding sixty men, was organized like this: Hastati: Ten junior and ten senior Principes: Ten junior and ten senior Triarii: Five junior and five senior For the imperial legion they were organized (in order of who advanced first); 1st cohort 2nd cohort 3rd cohort and so on.
There were five centuries in the first cohort, each century with twice the number of soldiers of a normal century.
All first-cohort centurions outranked all centurions from other cohorts. 
Battlestar Galactica (2003).
First War.
Always seeking new and better technology, the Twelve Colonies created the Cylons — highly intelligent robots designed to make human lives easier; however, the Cylons rebelled against their human masters, causing war to break out between man and their creations.
The war itself has never been discussed in detail.
What little that's known is that Humans fought using the Colonial Battlestars and Vipers, against the first generation of Cylons.
Given the Cylons' artificial nature, they had the ability to infect computer networks.
This caused the Humans to shun large computer networks in favor of isolated computer systems.
The war ended after twelve and a half years, when a peace accord was signed between the Twelve Colonies and the Cylons.
The reason for this accord, unbeknownst to the humans, was the arrival of the Final Five.
The Final Five, human-form Cylons from the legendary planet of Earth, make the Centurions a deal: end the war with the humans and they will help the Centurions create human-form Cylons of their own (something the Centurions had been trying and failing to do on their own) and give them Resurrection technology.
Moments before the peace accord is signed, the Guardian Basestar with the First Hybrid, a creation made by experimenting on humans, flees an ice planet and ends up on the run from both human and Cylon for over forty years.
Following the peace accord, the Cylons retreated from Colonial space and cut all contact with the Colonies.
The Colonials, hoping to prevent another war through diplomatic means, built Armistice Station as a place for Humans and Cylons to meet in order to maintain a peaceful dialogue between both races.
Each year for 40 years, the Humans sent a representative to Armistice Station; the Cylons sent no one. 
Meyer was the starting quarterback for the Cologne Centurions of NFL Europa before the league folded. 
  Union Station (Washington, D.C.), listed on the NRHP, Daniel Burnham, architect, 1907  Union Station (WMATA station) located under Union Station (Washington, D.C.) Union Station Plaza and Columbus Fountain, Washington, DC, listed on the NRHP in Washington, D.C.  
The Centurions were a surf rock band from Newport Beach, California, active in the late 1950s and early 1960s.
In recent times, they are best known for their recording "Bullwinkle Part II", a dark and saxy surf tune from their eponymous album.
This tune was featured in Quentin Tarantino's "Pulp Fiction".
Recently, this song has been used in episode 5x12 of the TV show How I Met Your Mother entitled "Girls Versus Suits".
Less well known is their song "Intoxica," a twangy and upbeat surf instrumental, used in John Waters' 1972 film "Pink Flamingos".
When they released their album on Del-Fi records in 1964, its cover was identical (as well as catalog number) to another artist's(Bruce Johnston) release, hence the title "Surfers Pajama Party" - which was not the name The Centurions had in mind.
Their name was changed from The Centurions to The Centurians sometime after 1967 due to legal reasons.