Victoria Cross. On 12 October 1917, the 34th Battalion—as a member of the 9th Brigade—was to take part in the 3rd Australian Division's attack on Passchendaele, Belgium. Subject to several days of heavy rain, the battlefield had been transformed into a boggy marsh on which the attack was to commence. Jeffries commanded B Company during the attack, which he halted at the entrance to Broodseinde railway cutting, as many of the direction tapes leading to the starting position had been destroyed or swallowed in the mud. To avoid any mishaps, Jeffries and another of the battalion's company commanders, Captain T.G. Gilder, pushed on alone as far as Keerselaarhoek cemetery to find the tapes marking the battalions starting line for the attack. Thus, by 03:00 the 34th Battalion was formed up on the line of attack. At the designated time of 05:25, the British opened up with an artillery barrage on the German positions just as the Australian forces entered no man's land for the attack. Heavy machine gun fire assaulted the troops from all directions as they bunched together on the firmer ground to avoid sinking in the boggy mud. Serious resistance was encountered at Hilside Farm, a strong point to the east of Augustus Wood in the centre of the highest part of the Passchendaele ridge. The position consisted of two pillboxes, supported by fifty metres of trench which was occupied by approximately thirty men with four machine guns. The fire from these machine guns forced the men of the 34th Battalion to seek cover on the exposed crest and threatened to halt the entire advance.[Jeffries, realising his force was suffering heavy casualties, quickly organised a bombing party of fourteen men and set about outflanking the pillboxes. Accompanying Jeffries was Sergeant James Bruce, a 39-year-old Scottish-born miner who had worked for Jeffries' father at the Abermain Collieries. According to popular legend, Bruce had promised to look out for his boss's son, and remained at Jeffries' side throughout the attack.Working around the position, the party attacked the emplacement from the rear, capturing four machine guns and thirty-five prisoners; thus reviving the advance. Jeffries then led his company forward under heavy artillery and machine gun fire to reach their first objective. Despite the heavy losses which left gaping holes in the Allied line, it was decided that the next stage of the advance was to go ahead. At 08:25, parties from the 34th and 35th Battalions headed out along the south-eastern edge of the ridge towards the outskirts of Passchendaele. Almost immediately, they came under heavy fire from a pillbox close by a railway embankment, at which time Major J.B. Buchanan, the senior brigade officer with the advance party, fell dead, leaving Jeffries to assume control. Gathering a party of eleven men, he set about silencing the machine gun position. Edging across the open ground, the party attacked the position from the west just as the machine gun was firing to the north. Realising that an attack was imminent, the machine gunner switched around, mortally wounding Jeffries in the stomach and sending the rest of the party to ground. When its fire eased, the remaining members of the group worked around the position, rushed it and seized two machine guns in conjunction with thirty prisoners. With the second objective only partially captured, the remnants of the 9th Brigade, battered by artillery and machine gun fire, were forced to relinquish their position and retreat back to their own lines. All that remained on the Passchendaele ridge of the 9th Brigade was the dead and wounded, among whom was Clarence Jeffries, who was later counted among those with no known grave

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