Fighters? You forgot my defense hornets, which countered your fighters while you were still ~600 miles away. Mine. Still. (Sense space fighters weren't designed for re entry, trying to re enter with one is akin to throwing a car from orbit. It's a metal box with fragile radiators. It would have been damaged on launch and on re entry. You should've built em in orbit.)
I upgrade my Hill. I now have those quad stacked AA cannons you sell in WWII movies, shooting down BF-109s. And my hornets are now utahraptors.
And anti- ICBM's.