Brighton Lines: You're right. The title of Ward-Higgs' composition - and possibly its original inspiration - does indeed come from Kipling's poem. The two men were exact contemporaries, and Ward-Higgs set some of Kipling's barrack-room ballads to music. But the words and music for SBTS are...
Sorry if the original point of the post wasn't clear. In both Kohima and SBTS, those hearing the words are being asked to go back and tell people that the soldiers gave their all for the cause. Some wrongly imagine that the line in SBTS should be "And when you go FROM Sussex", but the message is...
For anyone unaware of why these words appear at the back of the North Stand...
From the Kohima Epitaph
When you go home
Tell them of us and say
For your tomorrow
We gave our today.
From Sussex by the Sea
And when you go to Sussex,
Whoever you may be
You may tell them all that we stand or...