His first job is to take out the AA guns around the castle.

Some crewmen were left aboard to man the AA guns.

AA guns were still used for lower altitude threats.

She was fitted with five 40-caliber three-inch AA guns in 1918.

However, a single hit from a 40mm AA gun was usually enough to bring down an Il-2.

The 3.7-centimetre AA gun had jammed after the very first shot.

The boat's AA guns were used to shoot holes in the hull.

Seventeen 3-pounders were on board when she was lost in 1919, but it is unclear if that total includes the AA guns.

AA guns fire only once at each plane.

An additional 4-inch gun was fitted in during 1917 as an AA gun.