Military satellites fly north-south, commercial satellites fly east-west?

According to the Dr Karl pod cast military satellites fly north-south, whilst everything else flies east-west. I can’t find anything online to support this assertion. There is commentary that military satellites tend to orbit lower (for obvious reasons), and that polar satellites use a north-south orbit, but nothing else. Does anyone have any pointers on this? You’d think commercial imaging satellites would use a similar orbit at the very least…

[tags: space satellite military communications]