Preparations were generally timely and efficient , though accommodations and resources at storm shelters were stretched Body_movement thin , and many refugees tried to return Giving home against officials ' orders Arranging .

Often identified Check as the main driver of the rebellion , the rammassage du paddy was an efficient system imposed by Lon Nol in early 1967 whereby the government channels ( mainly the military ) took charge of buying and collecting the rice crops from the peasants .

Võ Nguyên Giáp , however , used Using efficient and novel tactics of direct fire artillery , convoy Patrolling ambushes and massed anti-aircraft guns to impede land and air supply Supply deliveries together with a strategy based on recruiting a sizable regular army facilitated Cause_to_make_progress by wide popular support Supporting , a guerrilla warfare doctrine and instruction developed Coming_to_be in China , and the use Using of simple and reliable war material provided Supply by the Soviet Union .

More efficient use of fissionable material as a result of Operation Sandstone would increase the U.S. nuclear stockpile from 56 bombs in June 1948 to 169 in June 1949 .