1832-1910 1914-1918 1939-1945 19thcentury 2003- 2003-2011 20thcentury 50th(1861-1865) armedforces australian belgium biography brainerd bridges campaigns defensecontracts designandconstruction discoveriesingeography discoveryandexploration estonia europe finance fortification france gallipolipeninsula germany governmentcontractors greatbritain history iraq iraqwar japan military militarybridges militarycampaigns militaryconstructionoperations militaryengineering militaryengineers militaryparticipation militaryrelations militaryweapons newyork(state) officers operationneptune operationoverlord participation personalnarratives photographers photography pictorialworks politicsandgovernment postwarreconstruction railroadengineering railroads regimentalhistories soldiers transportation treasuretroves tunneling tunnels tunnelwarfare turkey unitedstates weaponssystems wesley western westernfront worldwar worldwar(1914-1918)