. . "27th Australian Battalion" . "Primus inter Pares" . "27th Battalion (Australia)" . . . "27th Battalions" . "27th Battalion (The South Australian Scottish Regiment)" . . . "27th Battalion (Boothby Regiment)" . "27th Bttn." . . . . "27th Battalion (South Australian Scottish Regiment)" . . . "27th Battalion AIF" . "1921" . . . . . . "27th Battalion (South Australian Regiment)" . . . . . . . "1946" . "27th Battalion (Australia)" . . "1919" . . . . . "85px|alt=A two-toned diamond shape, one half of which is brown and the other half light blue" . "1987" . . "27th Battalion" . "27th Infantry Battalions" . . "27th" . . . . . "~800\u20131,000 menref|During World War I, the authorised strength of an Australian infantry battalion was 1,023 men. By the start of World War II, it was 910 men all ranks, however, later in the war it fell to 803.|group=Note" . . "1948" . "27th Australian Infantry Battalion" . . . "1915" . . . "1965" . . . "27th Infantry Battalion" . "27th Infantry Battalion (The South Australia Scottish Regiment)" . "Brown over blue" . "1960" .