ABRUPTLY, AT 9 : 45 P.M., THE BARRAGE BEGAN FIRST AGAINST THE PALACE GUARD BARRACKS, WHERE A MORTAR AND ARTILLERY ATTACK WENT ON FOR HOURS . WHEN IT CAME TIME FOR THE BIG PUSH ON THE PALACE ITSELF, THERE WAS A DANGER THAT VIETNAMESE AND AMERICAN FAMILIES WHO LIVED IN AN ADJACENT RESIDENTIAL NEIGHBORHOOD WOULD BE HIT BY SHELLS . SO, WELL AFTER MIDNIGHT, A FORCE OF 18 TANKS SUPPORTED BY ARMORED CARS AND 600 FOOT SOLDIERS WENT THROUGH A COMPLICATED MANEUVER THAT BROUGHT THEM CIRCUITOUSLY TO THE PALACE GROUNDS . AT 4 A.M., FROM SEVERAL SIDE STREETS, THE ATTACKING COLUMNS BEGAN POURING POINT-BLANK FIRE FROM TANKS, CANNONS, MACHINE GUNS AND RIFLES AT THE PROTECTIVE WALLS . BACK CAME A MURDEROUS COUNTERFIRE, EVERYTHING DIEM'S DEFENDERS HAD LEFT . FIRST ONE DIEM TANK CAUGHT FIRE AND EXPLODED IN A TOWER OF SMOKE AND FLAME . THEN ANOTHER WAS KNOCKED OUT OF ACTION . TWO OF THE REBELS' TANKS WERE ALSO DESTROYED . A CHORUS OF CHEERS . WITH HUGE HOLES NOW GAPING IN THE FENCES, AND THE DEFENDERS SCATTERING INSIDE THE GROUNDS, THE WAY WAS CLEAR FOR THE FINAL PUSH . THEN SUDDENLY, AT 6 : 15 A.M., EVERYTHING FELL SILENT AGAIN . A REBEL GENERAL, WHO THROUGHOUT THE BATTLE HAD BEEN IN CONSTANT TOUCH WITH DIEM AND NHU BY TELEPHONE, HAD CALLED FOR A FIVE-MINUTE GRACE PERIOD TO ALLOW THE BESIEGED PRESIDENT AND HIS PARTY TO EMERGE . BUT NO ONE CAME OUT, AND THE CANNON FIRING RESUMED, SMASHING WINDOWS, SPLINTERING DOORS, KNOCKING CHUNKS OFF THE PALACE WALLS . THE RIFLEMEN, BELLYFLAT ON THE GROUND, SNIPED HAPPILY AT DIEM'S LAST-DITCH SUPPORTERS . THE BATTLE WAS CLEARLY OVER, AND 17 MINUTES LATER, BY DAWN'S FIRST LIGHT, REPORTED TIME CORRESPONDENT MURRAY GART, " I COULD SEE A WHITE FLAG BEING WAVED FROM A FIRST-FLOOR WINDOW ON THE PALACE'S SOUTHWEST CORNER . BUT THERE WAS MORE SHOOTING FROM THE PALACE . THEN THE WHITE FLAG WAVED AGAIN AND FIRING STOPPED . AT FIRST CAUTIOUSLY, THEN FREELY, THE CAMOUFLAGE-SUITED REBELS BEGAN TO STAND UP, AND A CHORUS OF CHEERS WELLED UP FROM THE STREETS . WESTERN-STYLE, THEY FIRED THEIR GUNS IN THE AIR, AND RUSHED INTO THE SIEVED FORTRESS . " AFTER ALL THEIR EFFORT, THE REBEL SOLDIERS DECIDED THAT A LITTLE LOOTING WAS IN ORDER . MERRILY, THEY RAN FROM ROOM TO ROOM, RIPPING DOWN CURTAINS FOR SOUVENIRS, GRABBING PIECES OF CHINA . ONE SOLDIER GRABBED A CALENDAR THAT BORE DIEM'S PICTURE, STUFFED IT IN HIS SHIRT . ANOTHER MADE OFF WITH A TWO-FOOT JAPANESE DOLL THAT HE HUGGED FONDLY TO HIS BREAST . THE OFFICIAL STORY . FORGOTTEN FOR THE MOMENT WERE DIEM AND NHU . A FEW HOURS LATER, THE UGLY FACTS BEGAN TO EMERGE . FIRST, THERE WAS THE OFFICIAL STORY . A SPOKESMAN FOR THE MILITARY JUNTA ANNOUNCED THAT THE PAIR HAD SLIPPED OUT OF REBEL HANDS DURING THE CEASE-FIRE, BOARDED A DEPARTING TRUCK WHILE WOUNDED WERE BEING REMOVED, AND SOMEHOW REACHED A CATHOLIC CHURCH IN THE CHINESE QUARTER OF SUBURBAN CHOLON . THERE, ACCORDING TO THE STORY, BOTH KILLED THEMSELVES AT 10 : 45 A.M . IT WOULD HAVE BEEN AN INCREDIBLE END FOR SUCH DEVOUT ADHERENTS OF ROMAN CATHOLICISM, WHICH STERNLY CONDEMNS SUICIDE . BUT, IN FACT, THE PRESIDENT AND HIS BROTHER WERE OBVIOUSLY MURDERED . ACCORDING TO ONE VERSION, DIEM AND NHU, SHOULD HAVE BEEN SENT ABROAD BY PLANE ; BUT, INSTEAD, THEY ESCAPED FROM THE PALACE, WERE FOUND N THE CHOLON CHURCH BY A TROOP OF SOLDIERS WHO ARRESTED THE PAIR AND DROVE THEM OFF IN AN ARMORED CAR TOWARD MILITARY HEADQUARTERS . ON THE WAY, AN ORDER WAS GIVEN TO KILL THEM . WHEN THE ARMORED CAR ARRIVED AT HEADQUARTERS, BOTH MEN WERE DEAD . " UNOFFICIAL " PHOTOGRAPHS SHOWED DIEM'S BULLET-RIDDLED BODY LYING NEXT TO A PERSONNEL CARRIER, WITH A SOLDIER LEANING OVER HIM . A PICTURE OF NHU SHOWED HIM ON A STRETCHER, HIS BODY MARKED BY BRUISES . ACCORDING TO THE SAME REPORT, HE HAD BEEN STABBED TO DEATH . AGAIN THE ACCUSING VOICE OF MME . NHU WAS HEARD FROM LOS ANGELES : " ANY CRIME COMMITTED AGAINST THE NGO FAMILY CANNOT BE HIDDEN UNDER THE LABEL OF SUICIDE . I AFFIRM THAT SUICIDE HAS ALWAYS BEEN CONSIDERED INCOMPATIBLE WITH OUR RELIGION . " SHE ALSO WORRIED OVER THE FATE OF HER THREE YOUNG CHILDREN, 4, 11 AND 15, BUT REPORTS FROM SAIGON SUGGESTED THAT THEY WERE SAFE . SHE ADDED AMID SOBS : " IF REALLY MY FAMILY HAS BEEN TREACHEROUSLY KILLED WITH EITHER THE OFFICIAL OR UNOFFICIAL BLESSING OF THE AMERICAN GOVERNMENT, I CAN PREDICT TO YOU ALL THAT THE STORY IN SOUTH VIET NAM IS ONLY AT ITS BEGINNING . " THE TRUNG SISTERS . THE REPORTS OF DIEM'S MURDER THAT SWEPT THROUGH SAIGON LEFT A COLD CHILL AMONG EVEN THE BITTEREST OF HIS ENEMIES . BUT FOR A WHILE NOTHING COULD COOL THE EXULTANT CROWDS IN SAIGON . BUDDHIST MONKS, QUICKLY RELEASED FROM JAIL BY THE REVOLUTIONARY REGIME, JOINED THE THRONGS . SHOUTING STUDENTS TURNED THE TOWN ON END . THE MOB SMASHED BOOKSTORES THAT HAD BEEN OWNED BY DIEM'S BROTHER, BISHOP NGO DINH THUC, AND BY MADAME NHU . ANOTHER CROWD TOPPLED AND BROKE UP THE STATUE OF VIET NAM'S REVEREND TRUNG SISTERS, STALWART VIETNAMESE HEROINES WHO FOUGHT CHINESE OVERLORDS IN THE 1ST CENTURY A.D . ; THEIR MONUMENT HAD BEEN SPONSORED BY MADAME NHU . AT THE NATIONAL ASSEMBLY, A SHOUTING ANTI-DIEM CROWD SACKED THE HALL . THEN CARRIED DIEM'S PORTRAIT ONTO THE FRONT STEPS AND SHREDDED IT . AT FIRST, THE SOLDIERS OF THE MILITARY JUNTA LET THE EXCITEMENT RUN ITS COURSE, THEN TROOPS NUDGED THE MOBS OFF MAIN THOROUGHFARES, URGING THEM TO QUIET DOWN . THEY OBVIOUSLY HAD ORDERS FROM THE NATION'S NEW BOSS,DUONG VAN MINH, TO AVOID THE KIND OF TOUGH MEASURES THAT MIGHT MAKE ENEMIES FOR HIS REGIME . ORIENTAL GULLIVER . EIGHT YEARS AGO, GENERAL DUONG VAN MINH MADE A TRIUMPHAL ENTRY INTO SAIGON TO THE CHEERS OF HIS COUNTRYMEN . MINH'S TROOPS HAD HUNTED DOWN THE LAST GUERRILLA FORCES OF THE DREADED BINH XUYEN BANDITS, A SORT OF ORIENTAL COSA NOSTRA THAT PILLAGED THE COUNTRYSIDE AND CONTROLLED VICE IN SAIGON . SOMETIMES IT WAS KNOWN AS " THE WHOREHOUSE SECT . " SO MOVED WAS PRESIDENT NGO DINH DIEM BY MINH'S VICTORY THAT HE KISSED HIS GENERAL ON BOTH CHEEKS . IF SHEER HEFT COULD HELP HIM RUN SOUTH VIET NAM, BIG MINH WOULD HAVE NO PROBLEM . A GULLIVER AMONG HIS COUNTRY'S LILLIPUTIANS, HE STANDS JUST UNDER 6 FT . AND WEIGHS AROUND 200 LBS., HAS A PRONOUNCED SLOUCH CAUSED FROM CONSTANTLY HAVING TO STOOP OVER TO HEAR HIS COUNTRYMEN . AMERICAN MILITARY ADVISERS NICKNAMED HIM BIG TO DISTINGUISH HIM FROM A SMALLER-STATURED FELLOW OFFICER WHO IS NOT RELATED TO HIM, LIEUT . GENERAL TRAN VAN ( " LITTLE " ) MINH . VIETNAMESE GOOD-NATUREDLY CALL MINH " BEO, " OR FAT BOY . PRISON TO PRISON . BORN IN MYTHO, 35 MILES SOUTHWEST OF SAIGON, MINH GRADUATED FROM A LYCEE RUN BY THE FRENCH, IN 1940 ENLISTED IN THE FRENCH COLONIAL ARMY AND WAS COMMISSIONED A 2ND LIEUTENANT . HE SPENT MOST OF WORLD WAR II SERVING UNDER A VICHY COLONIAL ADMINISTRATION THAT DID THE BIDDING OF THE JAPANESE INVADERS . BUT IN MARCH 1945, WHEN VICHY SURRENDERED THE FRENCH COLONY TO THE JAPANESE OUTRIGHT, MINH JOINED A BAND OF DEFIANT, LOWER-ECHELON SOLDIERS WHO ORGANIZED HEROIC BUT FUTILE RESISTANCE TO THE CAPITULATION . MINH WAS TAKEN PRISONER BY THE JAPANESE, BEATEN AND TORTURED BY HAVING MOST OF HIS TEETH YANKED OUT . MINH IS PROUD OF HIS DENTAL SCARS AND TODAY, WHEN HE NEGLECTS TO WEAR HIS FALSE-TOOTH PLATE, HE SMILES JUST THE SAME, UNINHIBITEDLY SHOWING OFF HIS HALF-EMPTY MOUTH . RELEASED BY THE JAPANESE AFTER TWO MONTHS, MINH DULY REPORTED BACK TO THE FRENCH ONLY TO BE JAILED FOR HIS INSURRECTION . HE AND SEVERAL OTHER PRISONERS WERE PUT IN A CROWDED, REEKING CELL WITH NEITHER LIGHT NOR TOILET, ANKLEDEEP IN HUMAN EXCREMENT . MINH " ALMOST WENT CRAZY, " WAS FREED AFTER THREE MONTHS, THANKS TO A FELLOW PRISONER WHO WAS RELEASED BEFORE MINH AND INTERVENED ON HIS BEHALF WITH THE FRENCH COMMANDANT . THE FRIEND : NGUYEN NGOC THO, DIEM'S VICE PRESIDENT AND THE MILITARY JUNTA'S CHOICE LAST WEEK FOR PREMIER . ALTHOUGH MINH IS UNIVERSALLY DEEMED ANTI-COMMUNIST AND PRO-WEST, THE EXPERIENCE IN JAIL HEIGHTENED HIS NATIONALISM . HOWEVER, AFTER HIS RELEASE, HE ACCEPTED A PROMOTION TO 1ST LIEUTENANT IN THE FRENCH FORCES, SPENT FOUR YEARS ATTACHED TO THE PUPPET REGIME OF EMPEROR BAO DAI . IN 1952, WITH INDEPENDENCE ONLY TWO YEARS AWAY, MINH TRANSFERRED TO THE NEWLY FORMED VIETNAMESE ARMY WITH THE GRADE OF MAJOR . AFTER A STINT OF ADVANCED STUDY AT PARIS' GENERAL STAFF SCHOOL, HE RETURNED AND, FOLLOWING DIEM'S INSTALLATION IN 1955, LAUNCHED HIS GUERRILLA-STYLE CAMPAIGN AGAINST THE BINH XUYEN BANDITS . HE ALSO HELPED DIEM IN HIS CAMPAIGN TO SUBDUE TWO FANATIC, REBELLIOUS RELIGIOUS SECTS, THE HOA HAO AND CAO DAI . AFTER A SECOND TRAINING TOUR ABROAD THIS ONE AT THE U.S . ARMY COMMAND AND GENERAL STAFF COLLEGE AT FORT LEAVENWORTH, WHERE HE PICKED UP SERVICEABLE ENGLISH MINH IN 1958 WAS CHOSEN BY DIEM TO BE THE FIRST BOSS OF A FIELD OPERATIONS COMMAND TO COORDINATE THE MOUNTING WAR AGAINST COMMUNIST VIET CONG GUERRILLAS . GENERALS WITHOUT COMMANDS . LIKE MANY OF HIS BROTHER OFFICERS, MINH WAS TO BECOME DISENCHANTED WITH THE PRESIDENT'S RULE, WHICH OFTEN CUT HUMILIATING THROUGH THEIR CHAINS OF COMMAND . ONCE, WITHOUT SO MUCH AS ADVISING THE AREA COMMANDER, THE PRESIDENT'S BROTHER, NGO DINH NHU, ORDERED AN ENTIRE BATTALION TRANSFERRED 80 MILES FROM CANTHO TO SAIGON . MINH PROTESTED PRIVATELY : " GENERALS DO NOT HAVE POWER OF COMMAND, THEREFORE I DO NOT COMMAND . " HE WAS ALSO CONCERNED ABOUT LACK OF POPULAR SUPPORT IN THE WAR AGAINST THE VIET CONG, BUT HE TOOK NO PART IN THE ABORTIVE 1960 COUP . IN THE END, HOWEVER, MINH SUFFERED FOR HIS VIEWS, WHICH ULTIMATELY REACHED THE PALACE . LAST YEAR, EVEN THOUGH MINH WAS BEING PUSHED VIGOROUSLY BY GENERAL PAUL D . HARKINS, HIS FIELD OPERATIONS COMMAND WAS ABOLISHED, AND MINH WAS ASSIGNED AS " MILITARY ADVISER " TO THE PRESIDENT A MEANINGLESS POST IN WHICH HE WAS UNDER DIEM'S SURVEILLANCE TALK WITH THE PENTAGON . THE DOWNGRADING FAILED TO DIMINISH U.S . ENTHUSIASM FOR MINH, WHO IMPRESSED THEM NOT ONLY IN MILITARY ABILITY . HE IS ONE OF HIS COUNTRY'S TOP ALL-ROUND ATHLETES, EXCELS AT TENNIS, SOCCER, SWIMMING AND BOATING . MINH USED TO DELIGHT IN RUNNING HIS 16-FT . MOTORBOAT UP AND DOWN THE SAIGON RIVER BY MEANS OF A REMOTECONTROL STEERING SYSTEM, TERRORIZING ALL OTHER RIVER TRAFFIC . ONE DAY, A FEW YEARS AGO, MINH WAS MATCHED AGAINST VISITING GENERAL MAXWELL TAYLOR IN A SET OF TENNIS DOUBLES AND LATER EXULTED : " WE WHIPPED THE HELL OUT OF THEM . " IN THE ANGRY AFTERMATH OF LAST AUGUST'S " SPECIAL FORCES " RAIDS ON BUDDHIST PAGODAS, EYES FELL ON MINH AS A MAN WHO MIGHT LEAD A COUP . KNOWING THAT HE WAS SUSPECT, MINH TOOK CARE NOT TO IMPLICATE HIMSELF ; AS RECENTLY AS TWO WEEKS AGO, HE SHOWED UP WITH DIEM AT A PALACE CEREMONY . BUT WITHIN THE PAST MONTH, MINH PARTICIPATED IN AN AFTERNOON'S TALK WITH A VISITING PENTAGON OFFICIAL IN WHICH THE POSSIBILITIES OF A COUP WERE DISCUSSED . THE FAT BOY SUGGESTED THAT HE WAS NOT THE MAN TO LEAD IT, IF IT CAME, BECAUSE HE CONSIDERS HIMSELF A WEAK ADMINISTRATOR . MINH EVIDENTLY FOUND HIS ADMINISTRATOR IN ARISTOCRATIC, FRENCH-EDUCATED LIEUT . GENERAL TRAN VAN DON, 46, ACTING CHIEF OF THE JOINT GENERAL STAFF, CO-LEADER OF THE COUP, AND THE SHARPEST STAFF OFFICER IN SOUTH VIET NAM . SAYS ONE U.S . OFFICER OF MINH : " HE IS A VERY NICE MAN AND VERY TOUGH, BUT GENERAL DON IS MORE CAPABLE . " BIG MINH MAY LACK THE POLITICAL TALENT TO BECOME THE LEADER HIS COUNTRY NEEDS, BUT HE HAS SEVERAL IMPORTANT FACTORS GOING FOR HIM . FOR ONE THING, HE IS A CAREER INFANTRYMAN WITH A BULLDOG FACE AND A TOP SERGEANT'S BLUNTNESS, YET IS POPULAR IN THE RANKS . NEXT, HE IS CLEAN OF CORRUPTION OR A PRO-COMMUNIST PAST . FINALLY, BIG MINH IS POPULAR AMONG CIVILIANS . HE DRINKS SO LITTLE THAT ONE JOKE HAS IT THAT A QUART OF WHISKY WOULD LAST HIM A YEAR . HE IS MARRIED TO A PRETTY VIETNAMESE WIFE, HAS THREE CHILDREN . HE IS A BUDDHIST WHO ESCHEWS FANATICISM . SAID ONE VIETNAMESE LAST WEEK : " EVERYONE KNOWS GENERAL MINH . HE FOUGHT THE WHOREHOUSE SECT . HE IS A GOOD MAN . /