Devels, answer this for me,

Need help with this one,
yesterday
130 x Foreign Legion Infantryman (2470 Defense)
614 x Swedish Amphibious Corps (11052 Defense)
Total: 14346 defense

today bought 110 Infantry
240 x Foreign Legion Infantryman (4560 Defense)
494 x Swedish Amphibious Corps (8892 Defense)
Total: 14296 defense

How does my total defense go down? If I get rid of 110 Corps at 18 defense and replace with Infantry @ 19 defense, shouldn't I be up 110 points? And how did I lose ten extra Corps.?

Before other people give chime in, there is no other unit that was bought, these are the only two fields that changed.