As American military forces arrived in Afghanistan, they began building a network of bases to rule the entire nation. This repeated the mistakes of the Vietnam war. Each base required clean water, electricity, security, and frequent resupply, which required guarding bridges, road mine clearing, weekly supply convoys, and helicopter runs. This was expensive, required much manpower, left forces dispersed, provided ample targets for the enemy, and alienated the population with frequent “search and destroy” patrols that caused much death and destruction.