The GSM or clasp should have been awarded automatically once a soldier had completed the stipulated period of service in the particular operational theatre. Awards are triggered by the man's unit issuing the requisite Part Two Order once the aggregated service had been accrued. A clerical cockup could result in an individual missing out if, for instance, he was posted individually rather than as part of a subunit or unit like a company or battalion. This would most affect soldiers in the Corps like REME or RASC. In theory the parent Record Office was supposed to pick up the ball if the unit failed to initiate the process. The actual time between qualifying and physically receiving the medal could be several months. For National Service men, many would have received their medals after they had completed their service commitment.