Target tug
A target tug is an aircraft which tows an unmanned drone, a fabric drogue or other kind of target, for the purposes of gun or missile target practice. Target tugs are often conversions of transport and utility aircraft, as well as obsolescent combat types. Some, such as the Miles Martinet, were specially designed for the role. It was, and is, a relatively hazardous job, as live fire is typically employed and the people doing the shooting are usually still in training.
History
World War 2
Prior to and during World War II target tugs were typically operated by the air arms on behalf of which they flew, and were usually conversions of aircraft that had failed in combat or that were otherwise unsuitable or obsolete in their design roles (see Fairey Battle and Short Sturgeon). These aircraft typically trailed a drogue, or fabric sleeve,(not a drogue parachute) at the end of a long cable (often thousands of metres) and student fighter pilots or air gunners would shoot at the target from other aircraft (using painted bullets so that 'hits' could be recorded and later analysed).