Knife collecting is a popular hobby that can take many forms. Many people collect all one brand, such as Puma knives or Bowie knives. Other people collect style of knives such as single blade or locking blade knives.
Military knives can be an excellent collection piece. For the collector who loves to read and research, collecting military knives can be a very rewarding hobby. You may wish to begin by collecting any military knife that you find, but after researching, reading the history of various conflicts and the weapons that they carried, you may choose to specialize further.