Guns › Oerlikon FFOerlikon FFOerlikon FFOerlikon FFModification ofOerlikon FFCaliber20 mmService193119321933193419351936193719381939194019411942194319441945Greece · Balkans≈ 28 Oct 1940 – Apr 1941Aircraft 2193119321933193419351936193719381939194019411942194319441945P.24F≈ 28 Oct 1940 – Apr 1941P.24A