Don't know how I can prove buildings but if you check the Financial Summary before you end your turn and compare it to the end turn report, the difference will be in the army upkeep. Basically, your guys are recruited and draw their first pay check and then the next faction takes their turn. I was planning on using screenshots but I'm not feeling technically savvy. Just compare Army upkeep expenditures to see what I'm saying. By extension I'm guessing that there's no reason for your units to recruit and then for your buildings to be constructed later. Oh well, somebody just needs to get seiged.