Came back several hours later and took the fleet out when it showed back up on the statistics page.
Good luck rebuilding Zardoz3.

Defender zardoz3
Destroyed!
The attacker has won the battle !
You receive 584.766 units of Metal, 424.598 units of Crystal and 1.987.455 units of Deuterium.
The attacker has lost a total of 0 units.
The defender has lost a total of 786.166.100 units.
A debris field containing 203.307.960 units of Metal and 160.649.700 units of Crystal has formed in orbit around the planet.
The probability of creating a moon is : 19 %
You collect; 203.307.960 units of Metal and 160.649.700 units of Crystal.