Here we go, let's see how badly this pastes. I apologise in advance if the formatting screws up - it's a HUGE missive 
Subject: Some gentle hints
Chaps,
At the risk of sounding like a parent, I should be grateful if you could pass on the following collected wisdom, which I know you know, but others don’t. They should know that when I see/hear/read these things, I become distracted by them, to the detriment of more important matters. Ignorance is no defence in the eyes of the law, but I can well see that if we don’t ever tell people these things, they can’t reasonably be expected to know. I therefore think it only fair that you do know that I take a dim view of those who live in ignorance of these simple rules of civilised life.
Good Writing
A lot of military writing is verbose and pompous. Start by following Orwell’s six rules:
• Never use a metaphor, simile or other figure of speech which you are used to seeing in print.
• Never use a long word where a short one will do.
• If it is possible to cut a word out, always cut it out.
• Never use the passive where you can use the active.
• Never use a foreign phrase, a scientific word or a jargon word if you can think of an everyday English equivalent.
• Break any of these rules sooner than say anything barbarous.
Military writers love acronyms. Don’t use them unless they are so familiar as to be commonplace – NATO, UN, MOD are all acceptable. But don’t then clutter up the page by spelling them out: for instance, you don’t need to write ‘Unmanned Aerial Vehicle’ in full; it looks clumsy. Instead, find an everyday word we all understand – for instance ‘drone’.
Military writers misuse numerals. You cannot write ‘10 years ago’, it must be ‘ten’, until you reach the teens at which point 13, 14 etc are acceptable. ‘4 Rifles’ is right because it is a title, but ‘4 rifles are missing from the armoury' is wrong; it should be ‘four rifles’.
In common with officialdom the world over, military writers love to use pompous words over simpler language. Don’t write ‘commence’ when you could use ‘start’ or ‘begin’. Similarly ‘walk’, not ‘proceed’, and ‘buy’ not ‘procure’. Military writers love verbal nouns: for instance ‘we will transition into the Army 2020 structure’. This language offends any civilised person. Why not use ‘move’ instead of transition? Listed below are some more examples. You will note that the left hand column tend to be longer and Latin, the right hand column tend to be simpler and Anglo-Saxon (but not exclusively).
Bad Good
• Cognisant Aware/know (why do we use this curious word? If your wife asked if you were ‘cognisant’ that it was her birthday, you would think something amiss!)
• Utilise Use
• Migrate Move
• Asymmetric Different
• Transportation Transport
• Couch/settee Sofa
• Serviette Napkin
• Toilet Loo
• Pardon? What? (some people think saying ‘what?’ sounds a bit curt, but ‘pardon’ can only be used as a noun or verb and never as an interrogative).
• Sufficient Enough
• Chef Cook
• Whilst While (you will never see whilst in a well written newspaper)
• Perfume Scent
• Pass on Die
• Wealthy Rich
• Preserve Jam
• Sweet/dessert Pudding
• Cruet Salt and pepper
John Betjeman’s ‘How to Get on In Polite Society’, gently mocks those who are addicted to this sort of language:
Phone for the fish knives, Norman
As cook is a little unnerved;
You kiddies have crumpled the serviettes
And I must have things daintily served.
Are the requisites all in the toilet?
The frills round the cutlets can wait
Till the girl has replenished the cruets
And switched on the logs in the grate.
It's ever so close in the lounge dear,
But the vestibule's comfy for tea
And Howard is riding on horseback
So do come and take some with me
Now here is a fork for your pastries
And do use the couch for your feet;
I know that I wanted to ask you-
Is trifle sufficient for sweet?
Milk and then just as it comes dear?
I'm afraid the preserve's full of stones;
Beg pardon, I'm soiling the doileys
With afternoon tea-cakes and scones.
Military writers also love capital letters. Take a look at a well written book or newspaper and you will see how few capital letters are used. They should only be used at the start of a sentence, or with a proper noun. As an example, Colonel Smith has a capital C, but ‘the colonel’ does not. Combined with underlining and italics, the wanton use of capitals, abbreviations and acronyms assaults the eye and leaves the reader exhausted.
I notice a great many writers confuse the following words:
• Verbal for oral
• Disinterested/uninterested
• Anticipate for expect
• Fewer/less
• Infer/imply
• Comprise/consist of
• Require for need
• Although/though
• Meet/meet with
• Gender/sex
• Male, female/man, woman (the first are adjectives not nouns)
Others routinely confuse the following:
• Dependent/dependant
• Licence/license
• Practice/practise
• Principle/principal
• Lead/led
• Liaise
• Stationary/stationery
• Affect/effect