In the US Army’s, Field Manual of Electronic Warfare in Operations (FM 3-36), it states that:
Hardware is described as Computers, Relay Stations, Circuits, Radios, Scanners and other things of their ilk.
Software is described as the Programs used to Direct the Operations of the Hardware, to function within a command control system.
Wetware is described as the Personnel that operate or maintain the Command Control System.
It doesn’t say why the Pentagon gave Wetware the name it is. I can only use my imagination and assume that Wetware is what happens when People have Anti-Radiation Missiles shot at them. The other fact is that the Human Body is 98 % water. Only the Pentagon could coin a phrase with such an innocent content but has such devastating effect. In Today’s Internet Based Environment it rings with a larger intent. It also assumes that Hardware is easier to replace then Wetware. It is also along this same vein, that Roxanne of Dark Energy has been constructed.