The Langley Park War Memorial was unveiled in April 1921 and is a pink and brown granite Monument. The upper panels of the memorial show the names of heroes who lost their lives in World War I whilst the lower ones show later conflicts.
The memorial also lists an unknown soldier who's story can be found here
This is a multi-cache and can be found by working out the coordinates from the clues below. The actual cache can be found a short drive away at N 54° 48.ABC W 001° 40.DEF
From the upper panel that contains the surnames A to C
A = Number of heroes with the surname Bell minus 3
B = Number of letters in the first heroes surname
C = First digit you can see in this panel
From a lower panel
D = The unknown soldier from World War II was buried on 6 June 194?
From the upper panel that contains the surnames M to R
E = Number of heroes whose surname starts with the letter O
F = Number of letters in the last hero listed in this panel divided by 3
Checksum of numbers is 12
***** PLEASE NOTE IMPORTANT *****
CACHES ARE NOT ALLOWED TO BE PLACED ON ACTUAL MEMORIALS OR WITHIN THE BOUNDARY OF SUCH
AT ALL TIMES PLEASE TREAT LOCATIONS OF MEMORIALS WITH RESPECT