Archie · proper noun, noun1
Clipping of Archibald + -ie. The sense “anti-aircraft artillery” is said to be from airmen dodging hostile fire and shouting “Archibald, certainly not”, the refrain of a then popular music hall song of the same name first performed by George Robey in 1911. This habit probably originated with the pilot and commander Amyas Borton (1886–1969).
Archie · noun2
Clipping of Archimedes + -ie.
Etymology from Wiktionary, CC BY-SA 4.0.