The plan developed by Mackay and his chief of staff, Colonel Frank Berryman, involved an attack on the western side of the Bardia defences by Brigadier Arthur "Tubby" Allen's 16th Infantry Brigade at the junction of the Gerfah and Ponticelli sectors.
Planen som blev udformet af Mackay og hans stabschef, oberst Frank Berryman, omfattede et angreb mod den vestlige side af Bardia stillingen af brigadegeneral Arthur "Tubby" Allen's 16. infanteribrigade ved skæringspunktet mellem Gerfah og Ponticelli sektorerne.