If you are using a dynamic public IP address then you will need to setup a dynamic DNS service to keep track of it. With multiple cameras you will only need to set up one dynamic DNS service with one camera since the public IP address will be the same for each.
Army Enlistment Contracts. The enlistment contract you sign is a legally binding agreement between you and the Army. Failure to live up to the enlistment contract you sign with the Army can expose you to potential criminal or civil penalties.
The military pay chart lists the pay for each pay-grade, which is the same for all the branches of service. Army basic training pay, Navy boot camp pay and the other branches are the same; it varies depending on the rank in which you join at. You are paid by the Department of Defense, not your specific branch. So whoever tells you that get more money by joining their branch, is lying to you.