This post on incendiaries led me to a description of a gun, The Swamp Angel, (it may have been a 32 pdr) that was used with "Greek Fire" incendiary projectiles during the shelling of the city of Charleston during the American Civil War.
I am particularly amused by the passage,
"Gillmore instructed Colonel Serrell to explore the possibilities of constructing a battery in the marsh between James and Morris islands. By one account, Serrell gave the duty to a young engineer lieutenant who, after examining the salt marsh, declared the project could not be done.
Serrell informed the doubting engineer that nothing was impossible and to requisition any necessary materials. A short time later, Serrell received a request for twenty men eighteen feet tall for work in the marsh. At the same time another request was sent to the department's surgeon asking him to splice three six-foot men together to make the needed eighteen-footers."
Unfortunately, though predictably Col Serrell was not amused. He replaced the young engineer and went on to build the battery.