Complex sentence: Bridges is one of only two Australian World War I soldiers who were killed in action or died of wounds, who were buried in Australia; the other is The Unknown Soldier, disinterred from a French grave and buried at the Australian War Memorial in 1991.
Split into simpler sentences: Bridges is one of only two Australian World War I soldiers who were killed in action or died of wounds who were buried in Australia. The other is The Unknown Soldier, disinterred from a French grave and buried at the Australian War Memorial in 1991.