Field Gun - World War I

World War I

As the evolution of artillery continued, almost all guns of any size became capable of being moved at some speed. With few exceptions, even the largest siege weapons had become mobile by road or rail by the start of World War I, and evolution after that point tended to be towards smaller weapons with increased mobility. Even the German super-heavy guns in World War II were rail or caterpillar-track mobile.

In British use, a field gun was anything up to around 4.5 inches in calibre—larger guns were medium and the largest of all heavy. Their largest gun (as opposed to howitzer) was the 5.5 inch (140 mm) Medium, with a range of about 15,000\16,000 yards.