ight I could not do much telescope work myself--my
part of the field work was map reading, in which I had considerable
assistance from aeroplane photographs at D.H.Q. I asked the observers
to make telescopic sketches, on every compass bearing, of what they
could see. And then from these sketches and with my own maps and
protractor I was able to tell them what they were looking at on the
map, and to prepare a panoramic sketch for their use at Adam O.P. Pte.
King sent in an admirable series of sketches which were most useful in
this work of discovery. Later on the more powerful telescope was also
taken up to Adam O.P., and with this Pte. Fail did some most useful
work. With his exceptional eyesight and a gift for sketching he made a
series of excellent artillery target sketches. These I copied out and
coloured and sent to D.H.Q.; and they were sent on to the IV Corps
Heavy Artillery. These targets were fired at with great success. For
example one of the first sent in was of a cook-house and wireless
station at L. 33. a. On July 11 the heavy artillery carried out a
successful shoot on the place, using Adam O.P. as their observing
station. In order to place on record some of the work done by my
observers at Adam O.P. I will give some of the results of their
systematic observation.

A Divisional relief on July 3 and 4 was spotted by Capt. Kirsopp on
information given by the observers of exceptional movement in the
forward area. Another Divisional relief was detected by largely
increased movement on July 25. And a battalion relief on August 6,
with disastrous results for the enemy. At least fifty copies of
different telescopic sketches were sent in to the Division, including
a series of eight showing new workings by the Germans in their front
line system. Reports of nearly seventy gun-flashes were sent in as
well as many sound bearing reports. The following numbers of German
infantry and transport vehicles were reported from Adam O.P.

+--------+------+-----------+-----------+----------+-----------+
| Month | Days | Days of | Effective | Infantry | Transport |
| | | Bad Light | Days | Seen | Vehicles |
+--------+------+-----------+-----------+----------+-----------+
|June | 21 | 8 | 13 | 2,100 | 83 |
| | | | | | |
|July | 31 | 7 | 24 | 5,400 | 413 |
| | | | |