Rolfi Posted 9 April , 2010 Share Posted 9 April , 2010 Can anyone tell me more about the disc codes used by Tanks in 1917. I believe three colours were used on a steel rod; maybe something like these... Single green disc= wire cut or crushed Single red disc = wire intact Single white = forward Red and green discs = objective reached Red and white discs = enemy in small numbers Red, white and green = enemy is retiring. One source states that there were thirty nine different combinations,I reckon at most fifteen, and that the codes were printed on cards and distributed to tank crews and to the infantry. Can anyone add to this? Thanks RW Link to comment Share on other sites More sharing options...
truthergw Posted 9 April , 2010 Share Posted 9 April , 2010 For that many signals, the position on the wire must have been significant and/or there were more than one set of discs used. Link to comment Share on other sites More sharing options...
johnreed Posted 12 April , 2010 Share Posted 12 April , 2010 This is my copy of Tank Coloured Disc and Light Code. John Tank_Signals_1.doc Link to comment Share on other sites More sharing options...
tanks3 Posted 12 April , 2010 Share Posted 12 April , 2010 John, What do you base your information on? Tanks3 Link to comment Share on other sites More sharing options...
johnreed Posted 12 April , 2010 Share Posted 12 April , 2010 I had a scanned copy of the original issued leaflet to tank crews but it was a bad scan so I transcribed it. John Link to comment Share on other sites More sharing options...
Rolfi Posted 13 April , 2010 Author Share Posted 13 April , 2010 Thanks John, just what I was after. Cheers RW Link to comment Share on other sites More sharing options...
johnreed Posted 13 April , 2010 Share Posted 13 April , 2010 With reference to my previous post here are the Tank Discs:- John Link to comment Share on other sites More sharing options...
Ghost Posted 13 April , 2010 Share Posted 13 April , 2010 I take it that the bars and edge markings are for the colour blind. Alan Link to comment Share on other sites More sharing options...
truthergw Posted 13 April , 2010 Share Posted 13 April , 2010 I take it that the bars and edge markings are for the colour blind. Alan As far as the commonest form of colour blindness to affect males, they could not have picked worse. Link to comment Share on other sites More sharing options...
centurion Posted 13 April , 2010 Share Posted 13 April , 2010 As far as the commonest form of colour blindness to affect males, they could not have picked worse. Can you explain? The white bar across the red and the edging round the green would distinguish the two even for those with red green colour blindness - your statement does not seem to make sense. Ghost's does. Link to comment Share on other sites More sharing options...
MBrockway Posted 20 June , 2018 Share Posted 20 June , 2018 On 12/04/2010 at 21:01, johnreed said: I had a scanned copy of the original issued leaflet to tank crews but it was a bad scan so I transcribed it. John Here you go ... I found this by chance in the 123 Infantry Brigade (41st Division) war diary of May 1917 while researching an action involving the 18th and 21st KRRC. John - these images have been compressed and reduced. Drop me a PM if you want the full size original scans. Mark Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now