Armories 3 Defense industry 2 Ordnance industry 2 Boat & ship industry 1 Bottle industry 1 Chemical industry 1 Employees 1 more ... Firearms industry 1 Guards 1 Hat trade 1 Industrial buildings 1 Leather industry 1 Lumber trade 1 Machinery 1 Military education 1 Office buildings 1 Optical devices 1 Petroleum industry 1 Railroads 1 Telephone operators 1 Teletypewriters 1 Textile industry 1 War work 1 Warships 1 Women 1 less ...