Lots to choose from. More ideas:
- introduction of steel to replace iron which allows for high pressure small arms and artillery which greatly extends the ranges
- Aircraft (from Civil war balloons to the F-22) which opens a whole new dimension of engagement and shortens travel times: recon, transport, attack, protection, evacuation; also includes aircraft carriers
- Satellites for surveillance, weather mapping, and communications
- nuclear weapons
- motorized vehicles: armor, transport, artillery
- I especially liked to comments about communications: telegraph, radio particularly, now satellite, etc.
My choices for two of the hundreds of innovations would be communications and air power.
- introduction of steel to replace iron which allows for high pressure small arms and artillery which greatly extends the ranges
- Aircraft (from Civil war balloons to the F-22) which opens a whole new dimension of engagement and shortens travel times: recon, transport, attack, protection, evacuation; also includes aircraft carriers
- Satellites for surveillance, weather mapping, and communications
- nuclear weapons
- motorized vehicles: armor, transport, artillery
- I especially liked to comments about communications: telegraph, radio particularly, now satellite, etc.
My choices for two of the hundreds of innovations would be communications and air power.