"Give me a moment, I'm still bleeding here!"
"Lass, you are be to wear it now, or to bleed more. This time we be to shoot you on the head..."
Capturing a 35-foot tall alien is a tricky business. Even when unarmed, thier sheer size makes them dangerous to Human footsoldiers. The simplest way of dealing with this (besides not taking prisoners in the first place) is to fit the prisoner with some sort of remotely-detonated mine. The threat of a gauranteed-hole in thier neck is usually enough to keep the giant alien in line.
My Legacy-Verse OC, Lieutenant Derge, during the Human-Alaereen war. Derge was quick to learn how to speak the Alaereen language, so he was his regiment's point-man when dealing with the alien amazons.... He doesn't speak the language well, mind you, but he's usually able to get his point across.