In 1901 a lighter 100 lb (45 kg) shell was introduced which increased maximum range when firing from its wheeled travelling carriage to 7000 yards.

They constituted the only true heavy artillery the British army possessed, and were heavily engaged in the early battles in France and Flanders.

After February 1922, the Howitzer Regiment was fully deployed in Asia Minor, but its 9 batteries were being mainly used to reinforce divisional artillery in the front sectors that were deemed dangerous for a Turkish breakthrough.

The BL 6-inch 30 cwt howitzer continued to serve in the Greek Artillery for another 18 years, but from 1932 it was already rendered "obsolete" and in need of "extensive repairs to return to operational status".

Despite this, at least 16 pieces were deployed behind the "Metaxas Line" along the Greco-Bulgarian border in late 1939 and participated in the desperate battle against the invading German Army from 6 to 9 April 1941.