mortar-battery

Then the storm died out in long, separated, vicious dags of blue-white flame, followed by a single roar like the roar of a mortar-battery, and the shaken air tingled under the stars as it got back to silence.

Captains Courageous Rudyard Kipling 1900

Pavel Petrovitch (who was a general by this time) looking very hard at a mortar-battery about a hundred yards to our right; and all at once he struck his knee fiercely with his hand, and shouted:

St. Nicholas Magazine for Boys and Girls, Vol. 5, January 1878, No. 3 Various 1868

On the 1 6th of September they encamped in the neighbourhood of St. John's Fort, and next day a mortar-battery was compleated.

A general history of the British empire in America : containing an historical, political, and commercial view of the English settlements ; including all the countries in North-America, and the West-Indies, ceded by the peace of Paris 1770