The 2006 Lebanon War, also known as the Israel–Hezbollah War, posed a severe trial for the unarmed observers of United Nations Truce Supervision Organization (Untso) as well as for the armed troops of the United Nations Interim Force in Lebanon (Unifil). The UN observers were at risk from the crossfire between the Israelis and the Hezbollah militia, and needed to determine whether it was preferable to stay in their bases and to continue to observe and report to their higher headquarters, or whether to make the perilous journey back to their slightly more secure headquarters and rear bases. The danger of remaining in their patrol bases was brought home by the destruction of one of them by bombs from an Israeli aircraft and the death of the four UN Military Observers (Unmos) in it. Four Australians Unmos were serving in southern Lebanon at that time and were closely involved in these events.