Correct the sentence example. This was not going to be fixed with a mere apology. Fortunately, there is still time to correct these errors. Most of the time, he will be called upon to either guard a good bowl or to correct a probable blunder by the leader. It is also possible that he may be asked to perform some simple task away from the main camp. In any case, the sentry's duty is not very onerous and an able-bodied man should be able to do it for an hour at a stretch. The first thing to remember when writing a correction letter is that you are not doing so to criticize or complain about someone's behavior. You are doing so because there has been a mistake made that needs to be corrected. Thus, your letter should always begin with the phrase "Dear Sir/Madam" and should be as formal as possible without being stiff. It is best if you can write out the correction letter yourself instead of having it done for you by someone else. This way, you can be sure that you have written it in a clear manner and that all of the necessary information has been included. It is also helpful if you can include specific details in your letter that help the person who made the error understand why they should fix it.