Perhaps there is another possibility for misunderstanding...
In 1908 Colt introduced a revolver they named, the Army Special - but it was never adopted by any of the U.S. military services. By 1908 the Army had decided that they wanted a pistol, not a revolver - and they wanted a .45, not a .38 Special.
However they did adopt an earlier .38 revolver; Colt's 1892 New Army/Navy model, chambered in .38 Long Colt. It in turn was replaced by the 1911 .45 pistol.
Because the Army Special was never adopted, Colt continued to make it, but changed the name to Official Police, because while the military wasn't interested, the law enforcement community of that day was.
Army Special and Official Police revolvers, as well as those based on the 1892 platform can be obtained from various dealers who specialize in antique or classic handguns, and on many auctions that do the same. None of them are particularly rare.