. . . . . "1921" . "1919" . . "53rd Infantry Battalions" . . . "53rd Australian Infantry, A.I.F." . "~800\u20131,000ref|During World War I, the standard size of an Australian infantry battalion was 1,023 men. At the start of World War II this had reduced to 910 and with the establishment of the jungle division it fell further to 803.|group=Note" . "50px" . . . . . "53rd Battalion" . . . . . . . "1937" . . "53rd Battalion, AIF" . . "53rd Infantry Battalion" . . . . . "53rd Battalions" . . . . . . . "53rd Battalion (Australia)" . "53rd Battalion (Australia)" . . "1942" . "1916" . . "1941" . "53rd Battalion (West Sydney Regiment)" . "53rd" . . .