Of course - destroyers are melee! I have a very hard time keeping that particular one straight. By the way, totally OT, I just played an approximately 200-turn war (my Dutch vs the Byz) and 1) Byzantium deployed its defenses amazingly well. It was tough for me to close in with the Sea Daggers and later the ironclads. It was similar on land, although there I was outnumbered. The AI is very good at building the appropriate counter units, as well as not walking into traps too often. The other noteworthy thing Theodora did is, after having no CS allies for me to raid for maybe 150 turns, I lost control of one Mercantile CS for one turn - at which point she promptly took it and six other unaligned CS to DoW me. The AI could be more aggressive overall with CS alliances. However, they are spending their gold.