In the 1970's, the US Army decided that it needed a self-propelled anti-aircraft gun, similar to the West German Gepard or Soviet ZSU-23-4. The result was the M247 Sergeant York.
This article describes the M247 itself, the procurement process, and all the problems that led to Caspar Weinberger describing it as "basically an ineffective system" when it was cancelled in 1985. ... [click here for more]
Russell Phillips wrote an “A to Z” series of blog posts around the theme of AFVs (Armoured Fighting Vehicles). They have been edited and collated into this ebook. ... [click here for more]