Rank Among Time Travellers

Time Patrol recruit Manse Everard visits the London Patrol base in 1894. Unattached agent Everard visits it in 1885. Does Mainwethering, who deals with Everard in 1894, remember him from 1885 but of course not mention this?

"The sergeant looked sour but rank is rank, regardless of era; he did what I said - thinking, no doubt, that the next time we met he might be the colonel and I the sergeant. Which can happen in our corps."

-Robert Heinlein, "- All You Zombies -" IN Heinlein, The Unpleasant Profession Of Jonathan Hoag (London, 1980), pp. 126-137.

Poul Anderson's Time Patrol and Robert Heinlein's Temporal Bureau: a long series and a single short story.