Napoleon era:  Army： infantry， cavalry, artillery

                      Navy:   sailboat. Steamship adopted after the war

WWI:              Army: infantry, cavalry, artillery, tank

                      Navy: Steamship (battleship)

                      Air Force: attached to Army

WWII:            Army:  infantry, artillery, tank

                     Navy:   Aircraft carrier, combustion engine, naval aviation, submarine, destroyer, battleship

                     Air Force :  Major offensive force. Fighter, bomber, attacker

                     Electromagnetic warfare (radar, etc.). 

WWII:           Army: infantry, artillery, tank, missile

                    Navy:  Aircraft carrier, submarine, destroyer

                    Air Force: Multi-role, fighter, bomber, C4ISR 

                    Electromagnetic warfare: Traditional + internet. Main force

                    Space warfare: Main force: C4ISR,  space cruiser and figher (for space asset)