18 Div Arty 29 May 2016

VISIBILITY TABLE BETWEEN DAWN AND SUNRISE

 

 

Hour                Time before Sunrise                Objects discerned

 

 

Hrs.   Mins.

1-30 a.m.                     2         15         Break of dawn.

2-20 a.m.                     1         25         Read watch.

2-30 a.m.                     1         15         See chalk trenches at 600 yards.

2-45 a.m.                     1          0         See earth trenches at 600 yards.

3-5 a.m.                       0         40         Distinguish trenches a mile off.

3-10 a.m.                     0         35         See aeroplane easily flying at 3000’

(Looks black cannot see colours.)

3.15 a.m.                     0         30         Distinguish men’s heads above trenches at 100 yards.

3-25 a.m.                     0         20        See foresight of rifle and men at 300 yards    sufficiently easy for accurate firing.

3-35 a.m.                     0         10         Perfect light to see any objects.

 

 

 

Sunrise at 3-45 a.m.

 

The morning was an average summer morning, clear sky with thin banks of clouds in the East.

 

29/5/16

 

18 Div Arty 29 May 1916

M.P. 6

18 Div Arty

 

I enclose plan showing routes of F.O.O lines as arranged.

 

Each red line represents a pair.

 

All lines except from battalion at A 7/3 to CARNOY exchange are under floor of trenches.

 

Will you please return this tracing when done with.

 

M.T. Porter Captain

O/C Sigs 18th Div

29/5/16