CIA Factbook The World Factbook 1994: Trinidad and TobagoDefense Forces Branches: Trinidad and Tobago Defense Force (including Ground Forces, Coast Guard, and Air Wing), Trinidad and Tobago Police Service Manpower availability: males age 15-49 357,904; fit for military service 257,667 Defense expenditures: exchange rate conversion—$59 million, 1%-2% of GDP (1989 est.)