What does BWM mean in Governmental?

British War Medal

The British War Medal (BWM) was a campaign medal of the British Empire, for service in World War I. The medal was approved in 1919, for issue to officers and men of British and Imperial forces who had rendered 28 days mobilised service between 5 August 1914 and 11 November 1918 . The medal was later extended to cover the period 1919–20 and service in mine-clearing at sea as well as participation in operations in North and South Russia, the eastern Baltic, Siberia, the Black Sea, and the Caspian. 6,610,000 British War Medals were issued.

Governmental