This might spice up the industrial era and make use of some units you get gifted or upgrade to that you dont like.
All units keep the stats of the first unit.
2 artillery = rail gun promotion 64 ranged combat and only moves on rail hexes
infantry or anti-tank or anti-aircraft + cavalry = + 1 movement
tank + anti-tank = bonus vs. tank
anti-tank + artillery = range 3
anti-aircraft + artillery = range 3
anti-tank + anti-aircraft = get both abilities together
carrier + destroyer = can see subs + 40 interception
battleship + destroyer = can see subs + 40 interception
fighter + bomber = range combat 45 + range 9
All units keep the stats of the first unit.
2 artillery = rail gun promotion 64 ranged combat and only moves on rail hexes
infantry or anti-tank or anti-aircraft + cavalry = + 1 movement
tank + anti-tank = bonus vs. tank
anti-tank + artillery = range 3
anti-aircraft + artillery = range 3
anti-tank + anti-aircraft = get both abilities together
carrier + destroyer = can see subs + 40 interception
battleship + destroyer = can see subs + 40 interception
fighter + bomber = range combat 45 + range 9