
This link provides detail about medical care on the Western Front:
The following links give detail about 'shell-shock':
The story of one WW1 medical officer - Noel Chavasse VC and bar, MC.
The only site you need if you are studying the Edexcel AS Level Unit 2 topic - The Experience of Warfare in Britain, 1854-1929

Another of the more controversal aspect of the First World War - General Douglas Haig, later Field Marshal, Sir Douglas Haig.
A very useful link which looks at the subject of British military discipline in WW1.