group captain:
(short form – Gr Capt or Gp Capt; plural: ‘group captains‘; pronunciation: the letter ‘g’ in this word rhymes with the letter ‘g’ in the word “garden” — for the right pronunciation, please click here)

Anond Chariyaphan, Group Captain, Royal Air Force, Thailand
an officer of middle rank in the Royal Air Force (British military & other countries’ military);
the leader of a group in schools or colleges when the students are separated into groups for extra-curricular activities,

a group captain of a group of students on field trip
Carlos’ grandfather was a gallant group captain in the Royal Air Force who fought with the Germans and went missing in the line of duty.
There are communities in our city who have voluntary groups each with a group captain who help the city corporation in maintaining sanitation and the police in keeping law and order.
Matilda was thrilled to learn that she was chosen as the group leader of a group of volunteers that is going to help the flood victims.
There are civilians and military personnel who object to the act of bestowing military ranks to civilians who have done great service to the nation in a different way, especially sports personalities becoming group captains!
