The 4.5-inch howitzers equipped some batteries of the British Expeditionary Force in France in 1940.
 Ninety-six were lost, leaving 403 in worldwide service (only 82 outside UK) with the British Army, plus those held by Australia, Canada, New Zealand and South Africa.
 The British holdings were expected to increase to 561 by August 1940 due to the completion of reconditioning and repairs.
 The Germans designated captured British guns as 11.4 cm leFH 361(e) and Russian guns as 11.5 cm leFH 362(r).

The 4.5-inch howitzers equipped British and Australian batteries in the Western Desert in 1940 and 1941, and Australian units in Syria.
 Two guns that had decorated the main gate at Habbaniya aerodrome in Iraq were refurbished by the RAF and used by Habforce in the Anglo-Iraqi War in May 1941.
 The batteries with the 4th and 5th Indian divisions went with them to East Africa and South African batteries with 4.5-inch howitzers also fought in this campaign.

In the Far East in 1941, 4.5-inch howitzers equipped some British and Australian batteries in Malaya, and a troop in each mountain battery in Hong Kong.
 The 4.5s of the 155th (Lanarkshire Yeomanry) Field Regiment were instrumental in holding back Japanese attacks at the Battle of Kampar, in late December 1941.
The last operational use of 4.5 by the British Army was in early 1942 in Malaya.
 They were withdrawn from field formations in 1943 and declared obsolete in 1944 when ammunition stocks ran out.
The 4.5-inch howitzers equipped some batteries of the British Expeditionary Force in France in 1940.  Ninety-six were lost, leaving 403 in worldwide service (only 82 outside UK) with the British Army, plus those held by Australia, Canada, New Zealand and South Africa.  The British holdings were expected to increase to 561 by August 1940 due to the completion of reconditioning and repairs.  The Germans designated captured British guns as 11.4 cm leFH 361(e) and Russian guns as 11.5 cm leFH 362(r).
The 4.5-inch howitzers equipped British and Australian batteries in the Western Desert in 1940 and 1941, and Australian units in Syria.  Two guns that had decorated the main gate at Habbaniya aerodrome in Iraq were refurbished by the RAF and used by Habforce in the Anglo-Iraqi War in May 1941.  The batteries with the 4th and 5th Indian divisions went with them to East Africa and South African batteries with 4.5-inch howitzers also fought in this campaign.
In the Far East in 1941, 4.5-inch howitzers equipped some British and Australian batteries in Malaya, and a troop in each mountain battery in Hong Kong.  The 4.5s of the 155th (Lanarkshire Yeomanry) Field Regiment were instrumental in holding back Japanese attacks at the Battle of Kampar, in late December 1941. The last operational use of 4.5 by the British Army was in early 1942 in Malaya.  They were withdrawn from field formations in 1943 and declared obsolete in 1944 when ammunition stocks ran out.
QF 4.5-inch howitzer