For over forty years the M1 tank has been a world class fighting vehicle. But what you might not know is that the M1 should not have been built!

The Siemens-Schuckert D.IV; Best Fighter of the First World War?
When it comes to aircraft of great potential, those of the First World War are often overlooked. And while the dogfights between aircraft like the Sopwith Camel, the Fokker Dr.1 triplane and the SPAD XIII are often the source for historical recollection, this tends to...