The Abus gun (Turkish: Obüs meaning howitzer) is an early form of artillery created by the Ottoman Empire.
By the Napoleonic era: Each regiment of foot artillery was made up of 10 cannons; four of the older, heavy Balyemez [de] and Sahi cannons, two of the older, lighter Abus guns and four of the new French-designed field guns... each of which came in a bewildering range of sizes.
"[3] Abus guns were a short-barreled artillery machine that fired shots about the size of a human fist.
This movability was opposed to locating them in a guarded artillery emplacement, where versatility of the weapon would have been considerably restricted.
[2] Abus guns are used by the Ottomans in Age of Empires III, serving as a form of light artillery.