[4] They appear to have re-equipped from the 10-pounder mountain gun to the 3.7-inch howitzer while in East Africa, and first used the new weapon in action in an attack on German positions at Medo, 11 April 1918.

In the latter theatre, on occasion the gun was dismantled and manually hauled up to the upper floors of buildings to provide close support in urban fighting.

It was also used on Close Support versions of the A9 and A10 Cruiser Tanks in place of the standard 2 pounder, though mostly to fire smoke shells.

[citation needed] The weapon was designed to be broken into eight mule loads, for transport over difficult terrain.

The process of removing the howitzer from a position and reloading it onto the gun mules involved much more lifting and securing loads than deploying it, but could be accomplished in three minutes in favourable conditions.

The howitzer has a split trail, the first British weapon to do so, which allows firing at very high angles (a useful feature in mountainous terrain).