From Winston S. Churchill's My Early Life, page 50 in the Folio Society edition.
I learned several things at Sandhurst which showed me how to behave and how officers of different ranks were expected to treat one another in the life and discipline of a regiment. My company commander, Major Ball, of the Welsh Regiment, was a very strict and peppery martinet. Formal, reserved, frigidly courteous, punctilious, impeccable, severe, he was held in the greatest awe. It had never been his fortune to go on active service, but we were none the less sure that he would have had to be killed to be beaten.
The rule was, that if you went outside the college bounds, you first of all wrote your name in the company leave-book, and might then assume that your request was sanctioned. One day I drove a tandem (hired) over to Aldershot to see a friend in the militia battalion then training there. As I drove down the Marlborough lines, whom should I meet but Major Ball himself driving a spanking dog-cart home to Sandhurst. As I took off my hat to him, I remembered with a flash of anxiety that I had been too lazy or careless to write my name in the leave-book. However, I thought, 'there is still a chance. He may not look at it until mess; and I will write my name down as soon as I get back.' I curtailed my visit to the militia battalion and hastened back to the college as fast as the ponies could trot. It was six o'clock when I got in. I ran along the passage to the desk where the leave-book lay, and the first thing that caught my eyes were the Major's initials, 'O.B.', at the foot of the leaves granted for the day. I was too late. He had seen me in Aldershot and had seen that my name was not in the book. Then I looked again, and there to my astonishment was my own name written in the Major's handwriting and duly approved by his initials.
This opened my eyes to the kind of life that existed in the old British Army and how the very strictest discipline could be maintained among officers without the slightest departure from the standards of a courteous and easy society. Naturally after such a rebuke I never was so neglectful again.