Don, a soldier sleeping in a hammock, is abruptly awakened some hours earlier than expected and is quite alarmed, thinking the camp may be under attack by the enemy. The company headquarters runner who woke him up says, "The Old Man [i.e. the commanding officer] wants to see you." Then we are told:
Don made a rhetorical and most ungracious suggestion as to what the captain could do about it and slid silently to his feet.
Thus the author reports the use of what is presumably coarse language without quoting it. This cannot be called euphemism: it doesn't say that something bad is something good. So my question is whether there is a standard name for this device.
(This is from Robert Heinlein's novel Between Planets, which appeared in 1951.)