UN aerial reconnaissance had difficulty sighting PVA units in daytime, because their march and bivouac discipline minimized aerial detection. The PVA marched "dark-to-dark" (19:00–03:00), and aerial camouflage (concealing soldiers, pack animals, and equipment) was deployed by 05:30. Meanwhile, daylight advance parties scouted for the next bivouac site. During daylight activity or marching, soldiers were to remain motionless if an aircraft appeared, until it flew away; PVA officers were under order to shoot security violators. Such battlefield discipline allowed a three-division army to march the 286 miles (460 km) from An-tung, Manchuria, to the combat zone in some 19 days. Another division night-marched a circuitous mountain route, averaging 18 miles (29 km) daily for 18 days.
UN aerial reconnaissance had difficulty sighting PVA units in daytime , because their march and bivouac discipline minimized aerial detection . The PVA marched " dark - to - dark " ( 19:00–03:00 ) , and aerial camouflage ( concealing soldiers , pack animals , and equipment ) was deployed by 05:30 . Meanwhile , daylight advance parties scouted for the next bivouac site . During daylight activity or marching , soldiers were to remain motionless if an aircraft appeared , until it flew away ; PVA officers were under order to shoot security violators . Such battlefield discipline allowed a three - division army to march the 286 miles ( 460 km ) from An - tung , Manchuria , to the combat zone in some 19 days . Another division night - marched a circuitous mountain route , averaging 18 miles ( 29 km ) daily for 18 days .
What made seeing the PVA units difficult during the day?
What made seeing the PVA units difficult during the day ?
their march and bivouac discipline
their march and bivouac discipline