Re: Miltary testing
When vehicle-mounted whip antenna collides with overhanging tree limbs, overpasses, and whatnot failure is definitely possibility.
I saw an fun test method: a 6x6 oak beam extends between two buildings at a known height. A whip antenna mounted on a HMMWV going at a max speed is crashed into it. One hell of a "whaaaap!" sound is heard! Repeat to failure, record number of cycles, document failure mechanism...