Hats off to those lads.

This could be the Essex Regiment band with troops at the church parade at Wivenhoe W.W..  That big base drum is in the Essex Regiment museum at Chelmsford essex.
Aside from the soldiers (dread to think how many of them didn't come back), it's interesting to see the churchyard with the headstones and box tombs in it. They were all taken down before I was born

Thanks to Helen Barrell.