By the late 1950s, DC Comics (then known as National) was showing the world that superheroes could make a comeback in comics. Archie Comics took note and decided to jump on the bandwagon.
Archie Comics, originally known as MLJ, had published numerous superhero comics at the beginning of the Golden Age. The company hired Joe Simon and Jack Kirby in 1959 to get the superhero ball rolling again. One of Archie/MLJ’s original characters - the Shield - was dusted off and brought to life again, joined by the Fly, a new superhero.
The Shield, America’s first flag-wearing superhero, who pre-dated Captain America by several months, was an established character with a respectable run during the Golden Age However, the creative team presented an all-new character, with new powers and abilities, as the Shield. There are several theories as to why this was done, but most probable is that the same formula had worked with DC’s Flash and Green Lantern, so why not for the Shield as well?
Strangely, the hero’s comic did not mention the Shield in the title, but was instead called The Double Life of Private Strong. That’s like retitling Superman into The Adventures of Clark Kent When He Takes Off His Glasses.
Speaking of Superman, DC Comics was none too thrilled with the new Shield/Private Strong. This was because Lancelot Strong’s origin - orphaned son of a brilliant scientist who gains super-powers (many similar to Superman’s) and is raised by a kindly couple on a farm - was very similar to the Man of Steel’s. DC threatened legal action, and Archie shut down The Double Life of Private Strong after only two issues.
The character made a few small appearances in The Fly’s book, but soon disappeared. Archie brought back all of the MLJ superheroes, including the original Shield, in the mid-1960s during the superhero boom, but the Private Strong version of the Shield was left behind.
He finally returned as Lancelot Strong, alongside the Shield, in the 1983 series The Mighty Crusaders. Lancelot Strong was soon killed off, and as far as I know the character has never been used again. That’s a shame, as he was a result of one of the last collaborations between Joe Simon and Jack Kirby.
UPDATE: Thanks to @dirtyriver for pointing out a mistake I had made in the original post, where I mistakenly stated that the Fly was a revived character like the Shield.
That’s what happens when I try to do three different things at the same time while writing posts.