What makes a pipe a 'military mount'?
It is believed the term came about in the 1800's in europe. During time of war soldiers had to stow their pipe in there kit (pack). Often their tobacco pouch was a large waterproofed leather bag and pipes were made with the tapered push fit stem so they could be taken apart quickly and easily and put in their pouch for compact storage and with the tobacco protecting the pipe from being damaged. The same stem is sometimes referred to as a "steck" bit. That is the german word for "stick", as in "stick your stem in your pipe". The military and steck bits may or may not have the enlarged area near the stem which makes it so much easier to take apart and put together. You can only subject briar to a certain amount of pressure before cracking the shank so the ferrule became necessary although now they are sometimes merely decorative. For whatever reason many pipe smokers have come to believe that Kapp and Peterson invented and developed the tapered push fit stem but if you check into in you find that the exact origin is lost in time but it is known K&P did make constructive changes to the military mount with their P-lip bit and enlarging the draft hole beginning at the what would be the tenon end and then tapering it down to the smaller diameter. For these changes they were granted a patent even though others were making somewhat similar changes for which they too were granted patents. One such company was Wellington.