Many players still hold the free dekas from last year as hq troops. I have had several donated to me recently and therefore have three when I deploy my sc. This may explain your issue, but you will need to see if the extra deka was an sc deployment.
Active Imperial war squads : Spawn and Spawn~Rising.
(Spawn for level 8 or above) join us for back to back wars
(Spawn~Rising for any level) join us