We'd fire anti tank maybe every two years or so when ammo was plentiful. The L5 was especially fun for that because one could easily and quickly change the wheels positions to drop the gun almost flat on the ground
from this to this:
One had to keep a sharp eye out on the crest clearance near the gun position as the tube was only a little more than two feet above the ground. With the shield off, the gun could disappear in a small fold in the ground or heavy grass.