Leonard Allan Joseph Welsh was a 23 year old shoeing smith when he enlisted as a Private for the 6th Battalion on October 4th 1916. His unit embarked from Melbourne, Victoria, on board the Hororata on November 23rd 1916. On April 30th 1917 Leonard was transferred to the 66th Battalion, where he was promoted to temporary driver on May 26th. On September 24th he was re-transferred to the 6th Battalion and reverted back to a Private. On December 27th Leonard was wounded in action after being gassed, but recovered and re-joined his unit from the hospital on January 4th 1918.
On August 10th he was wounded in action for a 2nd time after being shot in his right foot. Leonard returned to Australia per the Lancashire on March 31st 1919 and discharged as medically unfit on May 8th 1919.

His brothers Stanley and Thomas also served in the AIF and are honoured with a tree in the Avenue.

One of a number of soldiers with multiple entries in the original register, he is also recognised at Tree 2549.