Ammunition boot

Ammunition boots, also known as Boots, ankle, General Service (BGS), were the standard footwear for the British Army from the late 1880s until the late 1950s. They replaced the earlier ankle boots that had been in service since the early 1800s.
The term "Ammunition boots" comes from the boots' unusual source. They were procured by the Master Gunner and the Munitions Board at Woolwich (the Regiment of Artillery's headquarters) rather than Horse Guards (the headquarters of the British Army). They were usually produced at a factory on site, but civilian manufacturers were given contracts to produce them during times of increased demand.