Pop up tents are that can be quickly set up and taken down as and where they are needed in order to provide shelter and 'relief' from unpleasant weather conditions.
There are many other uses of army tents other than for use around the home or commercial use, and of course the ability to provide protection from the atmosphere. You can easily find these army shelters from online military surplus stores.
With many types of tents available, choosing the right one can be mind boggling. If you are looking for a tent to use for many years and do not plan on going camping in winter, then a three season tent is all you need.
When it comes to deciding the size, if you are not going backpacking in the wilderness where the weight of the tent is a major consideration, always go for a tent that will take more people than the quoted size.
When you finally get your camping tent, set it up in your backyard and test it out before you leave home. Do this at least a week before your camping trip so that if you need any accessory for the camping tent, you have time to buy them before leaving.