A gabion is a cage, cylinder, or cube, typically mesh, filled with solid material suitable to use in various civil engineering and military applications. Ballasts include rocks, sand, soil, used tires
An inclined stacked wall of gabions supporting a multilane roadway near Sveti Rok, Croatia
Gabions as X-ray protection during customs inspection
Mattress gabions protecting a bank
Gabions stepped with the slope as a bridge abutment
A revetment, in military aviation, is a parking area for one or more aircraft that is surrounded by blast walls on three sides. These walls are as much about protecting neighbouring aircraft as it is
Gabion
…artillery firing positions against small arms and indirect fragmentary explosives. Applications include sleeping quarters, mess halls, checkpoints, and revetments for aircraft. The shape, proportion, and internal and external construction, reflect the use of each form of gabion…
USAF F-4D Phantom II fighters in their revetments at Ubon Royal Thai Air Force Base, Thailand, c. 1967
F-16 Fighting Falcon fighters in their revetments at Kunsan Air Base, South Korea, 2013
A blast pen and memorial at the former RAF Kenley
A Hawker Hurricane in a revetment at RAF Wittering in 1940