Following army service in India as a surgeon with the rank of lieutenant colonel, Fraser devoted himself entirely to dragonflies, mostly in the British Museum (Natural History), where his collection is maintained.
Setelah melakukan tugas militer di India sebagai dokter bedah dengan pangkat letnan kolonel, Fraster mencurahkan dirinya secara keseluruhan kepada capung, kebanyakan di British Museum (Natural History), dimana ia menempatkan koleksinya.