A leaked image of Chris Evan's Captain America costume in Avengers 4 reveals that Cap will debut his famous scale mail costume for the first time in the Marvel Cinematic Universe in the film. For years, there has been debate over whether such a look would ever translate into a live action design and now it appears as though it finally will be happening.

While the history of the scale male design in the MCU has been non-existent, its presence in the comics has also been sporadic, despite it being present in his design right from the beginning of Captain America's creation. However, like other famous design elements of other superheroes (like Superman's S-shield and Batman's fins on his gloves), it has slowly but surely seen an evolution in its depiction over the years.

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We must first look to history to see where Joe Simon was coming from when he came up with the original design of Captain America's costume back in 1940.

According to a history of armor in England:

The metal armour of the Normans and Anglo-Saxons consisted of a tunic of what is commonly called "mail," composed in the earlier instances of iron rings firmly sewn flat upon a strong foundation of cloth or leather, and subsequently interlinked one with the other, so as to form a garment of themselves, known by the name of "chain mail." Coexistent with these were several sorts of mail to which Sr. R. Meydrick gave the names of "tegulated," trelised," "mascled," "banded," with scale mail already recognized by antiquaries in the "lorica squamata" of the Romans.

You can see the lorica squamata here...

And, on a British tapestry from the Middle Ages, you can see what the scale mail of the English knights looked like...

Therefore, clearly Joe Simon was looking towards a knight-like design for his new patriotic hero, Captain America, when he sat down to design him over a year before the United States entered World War II. Note Simon even specifically writes "mailed armor" in the design...

That original sketch was translated into the first page of Captain America Comics #1...

Jack Kirby used the design for the cover of the first issue of the series, featuring Captain America famously punching out Adolf Hitler (again, this is over a year before the United States actually entered World War II, so this was a dramatic political statement at the time)...

Note that using knight-like scale mail costume designs was not an unusual approach for the time period. Less than a year later, Paul Norris came up with a similar design for Aquaman's shirt (although, there, the scale mail design also worked to evoke fish scales, due to Aquaman's aquatic background)...

This design remained consistent throughout the Golden Age, even when Joe Simon and Jack Kirby left the series fairly early on in a dispute with Timely Comics' publisher Martin Goodman over royalties they were promised but were never given.

Even when Captain America made a brief comeback in the 1950s to fight against Communists (drawn by a very young John Romita Sr.), the chain mail look remained...

The Silver Age, though, began to show a change.

Page 2: [valnet-url-page page=2 paginated=0 text='The scales begin to fade away']

Captain America kept his standard look when Jack Kirby and Stan Lee brought him back in Avengers #4...

However, the look slowly began to change.

The reasoning is clear. Comic book artists are constantly trying to put out their product on a tight deadline and back in the Silver Age, artists would be drawing multiple features a month. Therefore, a common approach is to use a sort of artistic shorthand. Small details like making sure that Captain America's costume maintains a scale mail look, for instance, tend to slowly fall by the wayside.

Check out these pages from Avengers #17 (by Don Heck and Dick Ayers) to see how the detail slowly but surely peters away over the pages until the scale mail is no longer present at all on the third page...

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However, in his main title, artists tended to make a point to maintain the scale mail look.

From Jim Steranko...

to Gene Colan...

to Sal Buscema...

The changeover seemed to occur around Mike Zeck's run. Zeck clearly was still drawing Captain America's scale mail costume, but you can see that the way that Zeck depicted it de-emphasized the scales, making them more implied than explicit.

While that nuanced approach worked brilliantly for Zeck, you can see how such an approach would slowly get depicted by other artists with less nuance. This is just natural, of course, as artists are just drawing the character based on what they see and if they missed what Zeck was going for, then it is only natural that it would slowly transition into a non-scale mail design.

The epitome of this came in 1990, when Marvel released their latest edition of the Official Handbook of the Marvel Universe. Ron Lim, then the artist on the Captain America ongoing series, drew the Captain America entry. This version of the Handbook was notable for its reference drawings of each of the characters and sure enough, Captain America's now-standard reference drawing did not include the scale mail armor as part of it...

Sure enough, even when artists brought back Zeck's accentuated look, like Ron Garney, the scale mail itself was effectively non-existent...

The big change occurred in 2002. Marvel had been doing Marvel Knights versions of a few of their characters since Joe Quesada and Jimmy Palmiotti had introduced the line of books in 1998. In 2002, they took over Captain America, as well, and released a new series written by John Ney Reiber that was drawn by John Cassaday. A new Captain America series so soon after 9/11 drew a good deal of attention to the book and Cassaday went back to the original Captain America design with his depiction of Cap in the book, as the scale mail was now heavily present again...

Of course, this was soon before the film versions of Captain America began to come out and the film versions affected the depiction of Captain America in the comics, as well, with Captain America getting more of a standard armor look that was closer to the film versions, while maintaining the scale mail look, as well...

Recently, the classic look (complete with scale mail) returned to the comics...

The film version will now be in tune with the comics for the first time ever!