Ship Strategy & Fleet Strategy in strategic combat-how does it work?

[MegaTrain]

From what I understand, the "Capture Platet" DOES work if you have troop transports in your fleet. There have been some other threads that discussed problems with it and problems with programming an AI to capture planets, but that is another issue.

The problem here is that I DON'T have any troop transports in my fleet, and yet I want to hit just the weapons on the planet to eliminate the threats to my ships.