Here's one reason why...
By Sean Rayment, The Telegraph's Defence Correspondent
A top level report ordered by General Sir Richard Dannatt, the chief of the general staff, warns that pressure on the Army is being "compounded" by the growing number of troops wounded in Afghanistan.
In an astonishing admission the report also reveals that the Army does not have accurate figures for the number of seriously injured soldiers within its ranks and admits that many are not receiving the appropriate medical support.
Details of the document can be disclosed as the Ministry of Defence (MoD) named three soldiers killed in a multiple improvised explosive attack close to Sangin on Thursday.
Captain Mark Hale, 42, Rifleman Daniel Wild, 19, both of the 2nd battalion the Rifles and Lance Bombardier Matthew Hatton, 23, of 40th Regiment Royal Artillery, were killed in two separate explosions.
Their deaths brought to 199 the number of British troops killed in Afghanistan since 2001.
The document, entitled the Chief of the General Staff's Briefing Team Report, also warns that "soldiers' morale and operational effectiveness" is being undermined by a shortage of vital equipment and that troops of all ranks are suffering from "widespread professional dissatisfaction".
* The Army has great concern over long-term care of wounded;It also states that commanders are increasingly worried that they are being asked "to do too much with too few resources".
* There is widespread concern that soldiers are waiting too long for treatment for non-operational injuries;
* Families fear returning troops are suffering from Post Traumatic Stress Disorder;
* Thousands of soldiers are not fit for operations;
* Every unit is carrying "gaps" in officer numbers;
* Increases in pre-deployment training are leading to tour lengths of 10-12 months;
* Bureaucracy is increasing across all levels of the Army;
* Territorial Army (TA) soldiers can earn more working shifts in Starbucks;
* It is "not unusual" for TA pay to be delayed by six to eights months;
* The Treasury has consistently refused to give soldiers on operations a tax-free allowance.