411 REFERENCE · Wiktionary
Lufbery circle
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
Named after fighter ace Raoul Lufbery (1885–1918), though he was not the inventor.
Noun
en military aviation A defensive combat tactic in which multiple aircraft form a horizontal circle in the air when attacked, so that the armament of each aircraft offers a measure of protection to the others.
en eponyms