sonics need frequency to blow things up not shear size...but size does help...

z665almostevil wrote Well guerrilla warfare is a good terror tactic but in the end u need a substantial force to fight toe to toe with then enemy, the Vietcong learned that in Nam...thats if u truly want to win

The whole idea behind the enemy's strategy in VN was to start out small, true guerrilla style, gain military and political advantages, and then shift to mobile warfare, just as Mao did in China.  And that's what happened.  First it was the VC who operated at a great disadvantage going up against a conventional force but they hung in there, were supported by North Vietnam with materiel and men.  Then, about 1965, the NVA came south in large numbers either as fillers for VC units or to act on their own.  They set up a puppet government in the areas they controlled.  When we moved out in 1972 they came in with all they had, tanks, artillery, whole divisions, and crushed South Vietnam.  Remember, as far back as 1962, when I was there the first time, the Viet Cong military force was organized along conventional lines, what we came to call "main force" units with a complete chain of command and supporting units.  And when the NVA entered the war after 1965, American troops often knew their terrain better than the enemy who'd just come down from the north.  The key to the VC's battlefield survival was they only committed their men when it was to their best advantage so they controlled their losses, as enormous as they were.  US units actually spent more time in the field than they did.  When the VC units were used to spearhead the 1968 New Year's Offensive, they were virtually wiped out as a viable military force and for the rest of the war it was the North Vietnamese Army we were fighting, not some ragtag guerrilla force subsisting by the seat of its pants. But the VC served its purpose in 1968 by achieving the greatest propaganda victory of the war even though by doing they were wiped out in the process.  By 1972 the so-called Ho Chi Minh Trail had been so improved that pilots flying over it at night said it looked like I-95 on a holiday.  And by then we didn't have the planes to bomb them.

So the Vietnam War was a very carefully executed plan.  It had its fits and starts, the commies made mistakes, but overall they kept to their strategy and they won.