In late August of 2011 Tamang was called up by the Nepalese Army to take part in the UN mission in Haiti. Tamang spent six months taking part in the international response to the 2010 Haiti earthquake. Nepal Army Club coach Damber Singh Gurung said that "We will miss him in the league. His role in our team is very important. But it is a system in Nepal Army that every Army [soldier] gets this opportunity to take part in UN Mission." In addition to missing many league games with his club Tamang also missed the FIFA World Cup Qualifier matches against Timor-Leste.