Or perhaps he wants to go on a long journey and requires the money: in one or two years he could lay by a sufficient sum out of his income, but he cannot afford to wait; and so he either borrows it or deducts it from his capital; in other words, he gets Time to lend him the money in advance.
"Counsels and Maxims From The Essays Of Arthur Schopenhauer"
Arthur Schopenhauer
It deducts for garrison and normal outpost duty details amounting to over 17,000 men; and reckons the marching out strength for the battle of 31st August-1st September at "about 120,000 men."
"The Franco-German War of 1870-71"
Count Helmuth, von Moltke
I deducts they'd known each other a long while.
"Whispering Wires"
Henry Leverage