The portable fusion reactor should either not require military science to research, as it's not inherently combat equipment, or the tech should be dependent on having researched mil science packs like all other combat equipment. Rocketry should also be dependent on military science now that it's pur...

Enable 'show-rail-paths'
Have an active train.
Deconstruct a rail with a rail path displayed on it, by hand or by bots.
Crash.

(multiplayer)