CANBERRA, AUSTRALIA—World War I-era trenches have been unearthed outside of the Australian capital of Canberra. Dug in 1916 by officers hoping to simulate battlefield conditions in Europe, the trenches were recorded in military documents, but their exact location was unknown until Australian National University archaeologists used remote sensing to search for them. The team is now unearthing an elaborate system of trenches and tunnels that was used to train soldiers in new tactics before they were shipped to the front. "It's a sobering thought ... when people were here they were probably optimistic about the new trench designs and how they'd go in the field," archaeologist Tim Denham told ABC. "And of course now we know what a terrible time it was for all those who went and unfortunately a lot of people didn't come back." To read in-depth about WW I-era battlefield archaeology, go to "Anzac's Next Chapter."