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Western Mail, Thursday 11 May 1933, page 2
THE "SOOLEM" BRIGADE.
Dear "Non-Com.," - I have read several accounts of sooling from time to time in "The Western Mail." Here is another. At the end of 1915, one Bill Cook was a porter at the Central Station, Perth, and one day he approached au old lady and carried her luggage to her compartment. For thanks the old dear looked up and said, "Why is a young man like you not at the front? My two sons are both at the front-one is in the Army Post Office in Cairo and one is an orderly in a hospital at Boulogne. You ought to be fighting, too!"
Cooky volunteered immediately and ran into the Pozieres barrages in July and August, 1916.
He often pondered over the old lady's two soldier sons - one in Cairo and one at Boulogne - and cursed all soolers.
"2480," Yealering.
Bill Cook = 5696 Gunner William COOK, a 42 year old Labourer from 515 Murray Street, Perth, Western Australia enlisted in the AIF on 12 August 1915 and was allotted to the 3rd Field Artillery Brigade, 11th Reinforcement and embarked at from Melbourne, Victoria, on board HMAT A71 Nestor on 11 October 1915. During the Great War he Returned to Australia, 31 October 1917.
2480 = 2480 Private James HARVEY, a 21 year old Miner from Cue, Western Australia enlisted in the AIF on 12 May 1915 and was allotted to the 16th Battalion, 7th Reinforcement and embarked at Fremantle, Western Australia, on HMAT A51 Chilka on 18 June 1915. After the Great War he Returned to Australia, 28 February 1919.
sool = Similar phrases include "sicking", "seeking" and "sooking" - all in the context of getting a dog into a state of excitement to pursue a foe - visible or not.
"SOOLEM" BRIGADE (Sool ‘em Brigade) – That group of people in Australia who stirred up young men to enlist in the AIF.