Patterns are usually employed at small general aviation (GA) airfields and military airbases. Superfortress bombers flying from airfields in China. This involved the bombing of English Channel convoys, ports, and RAF airfields and supporting industries. The aircraft destroyed by German bombers on the airfields were mostly trainers. More Soviet tanks were destroyed as they overran the Romanian airfields. Swiss fighters began instead to force intruding aircraft to land at Swiss airfields. Many of those airfields live on today as municipal airports. PAF claims of destroying around 36 aircraft on the ground at various Indian airfields. Redundancy architecture of the avionics support for autonomous emergency landings on different airfields if necessary. German paratroopers landed at three airfields near The Hague. Only 29 of the 42 airfields bombed were being used. German airborne theory was based on parachuting a small force onto enemy airfields. The introduction of strategic bombing led to efforts to camouflage airfields and strategic production centres. There were two other military airfields nearby, at Arsie and Fonzaso. Fighters were to serve CAP duties where needed, especially over U.S. airfields.