During the Vietnam War Australian soldiers discovered a major Viet Cong army base below ground at Cu Chi. Their efforts to remove the Viet Cong from this enormous tunnel system was an absolute credit to their bravery and skill. Today, the tunnels are a tourist attraction. This is a homework task to support student understanding of the NSW History syllabus for the Australian Curriculum Stage 5 Depth Study 6: School-Developed Topic. Australia in the Vietnam War Era It is an activity requiring students to analyse a variety of primary and secondary, visual and written source materials to gain an understanding of the conditions in which Australian soldiers fought in the Vietnam War.