The Lewis Gun was developed by US Army Colonel Isaac Newton Lewis. It was widely adopted by European armies upon the outbreak of First World War, 1914-1918. The gun was mainly distributed to Britain.
Lewis Gun in WW1:Source
The Lewis Gun in WW1:Source has a smaller magazine than the German MG08 with 97 bullets per load. This machinegun also has a slightly slower fire rate than its CP counterpart, but has a slightly faster reload time.