If, as the borrowing of the Cymbals by the 13th, all band instruments were borrowed then the apparently short life of many troop bands is understandable. The band comprised 8 or 9 instruments, a significant proportion of the Troop.

The current review of the 13th Cambridge archives suggests that it did not extend much beyond three or four years from its inception on the 1st December 1914. Certainly by 1923 the drums were being offered for sale to the District.
No photograph has yet emerged of the 13th band during this time, but very few records between 1914 and 1918 exist at all. They are particularly valuable telling of this early and formative period of Scouting.
See Activities/ Cambridge Scout Bands
JWR