He played in Australia's first win over the All Blacks in Sydney in 1910 and in the inaugural Test against the United States in Berkeley in California in 1912.

Harold George was enlisted to a force of reinforcements for the 13th and left Sydney on board HMAT A49 Seang Choon on 11 February 1915.

Along with the rest of the 4th Brigade, under the command of then Colonel John Monash, the 13th Battalion took part in the Landing at Anzac Cove, arriving late on 25 April 1915.

[4][5] His clubmate Clarrie Wallach who also fought at Anzac Cove, wrote a letter home which was published in the sporting paper The Referee.

He described hearing of George's death from William Tasker another rugby contemporary who saw Gallipoli action and later died on the Western Front.