Seems that its designed for a civilian environment where no one works weekends - they are all 'non-working' days. Bank holidays not recognised either so the wonderful new HR department will be giving every one (should be on now) 4 days additional ILA (Individual Leave Allowance or whatever) to cover Good Friday, Easter Monday and the 2 May bank holidays.
In addition absences cannot currently be put in retrospectively - no capability for having an 'emergency' day off for car / family / house etc problems and putting it in after you get back to work.
If you pay for food and go away for less than 3 days it appears that its still to be paid for ... anyone for ration packs? If I am paying for it I expect to be provided with it.