A former Elizabeth College pupil will be leading 55 men on a peace-keeping mission to Afghanistan later this year.
The Rifle Volunteers of the South West Territorial Army will be travelling to the capital, Kabul, under the command of Captain Jean-Paul Quertier, who was born and raised in Guernsey.
The reserves are due to arrive in Kabul in November and will be there for three months.
Captain Quertier said: "It's a fantastic opportunity and one that rarely presents itself for a TA officer to command a relatively large group of reserves in an operational theatre.
"However, that is coupled with the thought of being away from my family for Christmas."
The reserves will be attached to a regular infantry company and their job will be help patrol two of the 11 police districts.
Other TA units have been performing similar roles on a rotational basis over the last 12 months.