Task: Translation
Input (Chinese): 约翰·克拉伊斯上尉是其中一名被告，曾与王子一起学习，并于1998年和1999年在海军的制造部门工作。
Output (English): Captain Johan Claeys, one of the accused, studied with the Prince and worked at the facturation services of the Navy in 1998 and 1999.