Meanings of heavy howitzer in English

I thought it was time to emerge from my literary camouflage and let off a heavy howitzer; which I did, with the following:-

A heavy howitzer shell had fallen and burst right in the midst of a Belgian battery, making its way to the front, causing terrible destruction.

This arrangement would have much in its favour, for every corps may find itself in a position where heavy howitzer batteries can be profitably employed.

The grand masses of heavy howitzers were used in a different way.

The enemy had a very large number of heavy howitzers in well-concealed positions.

The Russians reacted, using at least two batteries of heavy howitzers.

A battery of heavy howitzers was also in action.

Beyond an embankment, some big guns and heavy howitzers were hidden by a heap of piled-up snow.

By this time the enemy had succeeded in bringing up several heavy howitzers, and our casualties were considerable.

A Heavy Howitzer, Under Camouflage

Two or three heavy howitzers-probably captured German equipment-were shooting at our encircling forces; the impact of the projectiles uprooted trees.

Those heavy howitzers, fresh from the foundry, drawn by big caterpillar tractors, were all proceeding in one direction-towardthe Somme.

With an army there are some 8.2-inch heavy howitzers.

This was known to be honeycombed with deep dug-outs and galleries and was therefore a frequent target for our heavy howitzers.

Two heavy howitzers which the tractors hadn't been able to pull from the mire were loaded with shells of any caliber.

Yet it harassed the Germans by so much activity that the Teutons continued to add to their heavy howitzers and large caliber naval guns.