Lieutenant David Harewood has been dismissed from the Barbados Defence Force.
On Tuesday, the 18-year veteran of the Barbados Defence Force was found guilty at the end of his court martial at St Ann's Fort, Garrison, St Michael.
The decision was made by a six-member military panel.
Harewood, who is attached to the Barbados Coast Guard, was found guilty of neglect to the prejudice of good order and military discipline by not informing his superiors about a threat to Ordinary Seaman Marlon Scott.
The former senior officer of the Coast guard was also found guilty of engaging in conduct that prejudiced the good order and military discipline by carrying out unauthorised information-gathering operations at various locations between January 1st and September 30th last year.
He was originally on four charges, but two relating to communicating with the enemy were dropped.