Much of the German field artillery on the plateau was hidden in the remains of the woods or behind the plateau, safe from ground observation.
22.
Based on ground observations and Doppler radar, the system transitioned into an extratropical cyclone at 1800 UTC on June 7, while located over northeastern South Carolina.
23.
The purpose of the exercise was to practice " close air support " for ground forces, while also training controllers who operate from ground observation posts.
24.
Apart from ground observations, there were also reports from several aircraft . The crew of a Tu-154 spotted a luminous spherical object at an altitude of 12 km.
25.
The 18th Division reported afterwards that ground observation posts had only a partial view over the trench, air observation was limited by frequent fog, rain and high winds.
26.
The remnant population is estimated at 70-80 by Vigano based on ground observation and counts and at 200 by Evangelista, based on satellite photography and a prediction method.
27.
After the attack of 26 September, the British had used prisoner interrogation, information gleaned from the battlefield and ground observation to judge the state of the 4th Army.
28.
A wide field of fire was unnecessary and to be dispensed with, to make each part of the position defensible by placing defences on reverse slopes, concealed from ground observation
29.
Trained observers gleaned information on German aircraft movements from wireless signals or ground observation and communicated the bearing from interception stations by wireless to wing headquarters or telephoned squadrons direct.
30.
Therefore, a scout plane is essentially a small naval aircraft, as distinguished from a tactical ground observation aircraft, a strategic reconnaissance " spyplane ", or a large patrol flying boat.
