An instrument is a concrete or abstract tool intended for a purpose other than mechanical work, in particular a refined one.
Musical instruments are devices designed to produce music, frequently by plucking or striking a string or bell or drum surface, or by forcing air to resonate (see wind instruments).
... Forces for the Interior) under command of general Marie Pierre Koenig[?]. It also became a part of the Allied armed forces. Allies sent three-men teams (codename Jedburgh) ...