25th Light Anti-Aircraft Regiment, Royal Artillery was an air defence unit of Britain's Territorial Army (TA) formed in Liverpool just before the outbreak of World War II. It saw active service in the Western Desert Campaign, losing a battery at the Battle of Gazala, and then joined 50th (Northumbrian) Infantry Division for the assault landings in Sicily (Operation Husky) and Normandy (Operation Overlord). It ended the war with 53rd (Welsh) Infantry Division in Germany, and was reformed in the postwar TA, eventually merging with other Liverpool units.