The 835th Bombardment Squadron is an inactive United States Army Air Forces unit. It was activated in January 1941 as the 80th Bombardment Squadron and equipped with Douglas A-20 Havoc light bombers. Following the attack on Pearl Harbor the squadron began to fly antisubmarine patrols off the Atlantic coast and over the Caribbean Sea, becoming the 9th Antisubmarine Squadron.

Royal Air Force Sudbury or more simply RAF Sudbury is a former Royal Air Force station located 2 miles (3.2 km) north-east of Sudbury, Suffolk, England.