Driggs-Schroeder was the name of several naval guns designed by US Navy officers William H. Driggs and Seaton Schroeder for the United States Navy in the late 1880s, fitted on ships built in the 1890s. Some Driggs-Schroeder weapons were also adopted by the US Army. Driggs later founded the Driggs-Seabury Ordnance Company in 1897, in partnership with his brother Louis Labadie "L. L." Driggs and Samuel Seabury, a retired US Navy officer.
A Hotchkiss 6-pounder rapid-fire gun on USS Oregon (BB-3), generally similar to the Driggs-Schroeder 6-pounder. Their 1-pounder and 3-pounder rapid-fire guns were also of this configuration.
Breech of a Driggs-Schroeder 6-pounder gun on USS Olympia.
Driggs-Schroeder 6-pounder gun being tested.
Driggs-Schroeder 6-pounder gun preserved in Easton, Pennsylvania.
The QF 1 pounder, universally known as the pom-pom due to the sound of its discharge, was a 37 mm British autocannon, the first of its type in the world. It was used by several countries initially as an infantry gun and later as a light anti-aircraft gun.
German gunners wearing gasmasks, with Maxim Flak M14
Australian troopers with a captured 1-pounder in South Africa circa. 1901
Boer 1-pounder with shield
On USS Vixen, c. 1898–1901