Settler / Worker Actions Build Road R * Road to Ctrl-R Build Rail Shift-R * Rail to Ctrl-Shift-R Build Road/Rail Net Ctrl-N Build/Join city/colony B * Road then Colony Ctrl-B Irrigate I * Irrigate to city Ctrl-I Improve Nearest City Shift-I Improve Nearest City/Without Altering Ctrl-Shift-I Build Mine M Build Fortress/Barricade Ctrl-F Plant Forest N Clear Pollution/Forest/Jungle/Marsh Shift-C * Clear all Forest Shift-F * Clear all Wetlands Shift-W * Clear all Damage Shift-D Automate Worker A Automate Worker (virgin terrain) Shift-A Air Missions Bombing B Recon R Air Superiority S Re-Base Shift-R Precision Strike P