Although some of these won't be of any use to us what-so-ever, some are very relevant for our re-enacting group. We have a security post that is always manned, not to keep people out so much as to greet the public as they come in and answer any questions they may have. If you don't know the answer, you'll usually know who to direct them to. However, by understanding the actual World War 2 Guard Duty General Orders, it may help you to give an overall impression of a guard that is both trained and knowledgeable.