Until the cavalry, in a flanking manouvre, charges in and smashes into the rear...
I recall, when watching
Gettysburg, (1993) at a point where the Confederate troops are being shelled while standing on the edges of the
trees, Martin Sheen (as Robert E. Lee) makes the astute observation:
.. "One place is just as safe as another." (or "...just as good as another." The sapwood fails a bit on the exact phrasing.)
Seems applicable here - though there is some truth to being in the back in many cases. And with the
Orc armies of course, they had no cavalry to do a flanking maneuver.
It was WAY back in the day when the
Kings and Lords actually led their troops into battle.
It was well back in the day when they started 'bringing up the rear' instead, because it really was safer.
And it was a fair time ago when they were at least on sight, but didn't actually join in at all. (The American civil war was such a case., the lesser officers joining in, but the greater staying back in relative safety.)
Now, they don't even leave their offices or headquarters. They just send the
ships, planes, bombs, drones, and grunts in to die.
The
Ents always kept in mind -
Treebeard led the way! There was no hesitation in him whatsoever.
(note: the quote above COULD be by Robert Duvall in Gods and Generals, 2003, instead. But I do see Sheen saying it in my aging mind. Now I fear I'll need to watch them both again.)