I came across this video the other day whilst researching another topic. It is an interesting overview of the heavy machine guns of World War I. As most know, that class of weapon was a huge part of what made the war what it was. There is also a video about the Austro-Hungarian Schwarzlose. As a bonus, the 1918 Mauser Tank Gewehr (tank gun) is covered in the video below. This was basically a Mauser 98 scaled up to a massive 13.2mm cartridge and utilized against early tanks. Anywho, I found the material interesting, so I figured I'd pass it along. Cheers.