The recruitment of a new army and uploading of injured units is only available in your own provinces. A click on the “Upload units” button will upload the chosen unit, the “Upload All Units” button will work on all damaged units. A click on Recruitment will take you to the recruitment screen, where you can buy units until you have no free slots left. Recruitment always takes one round, which means that you will begin your next round with the recruited and/or uploaded units.