If you are caught using drugs in a Compulsory Drug Test, or if you tell an officer that your drug use is making it difficult to do your job, the army will discharge you straight away in line with their 'Zero Tolerance' policy.

Soldiers have said that this usually happens quickly and does not usually involve a Court Martial unless they suspect you of dealing.

Personal use of Class C drugs (such as marijuana) by soldiers who have recently joined the army - if it's a first offence and there is no evidence of dealing - might lead to a warning and increased drug testing in the future, rather than a discharge.

If you're thrown out of the army for drug use, your discharge papers will give the reason as 'Service No Longer Required' ('Dishonourable Discharge' no longer appears), but failing a drug test does show on your papers.