This might have worked in 1918 or 1948, but even in the 60s and 70s, satellite and aviation recon would find this kind of trap... It's an obsolete idea from a b

This might have worked in 1918 or 1948, but even in the 60s and 70s, satellite and aviation recon would find this kind of trap... It's an obsolete idea from a bygone era. What happens now is, your artillery is spotted by overflight (drone, satellite, plane) or ground asset and the trap is either destroyed or kept busy so it can't be moved while the attack takes another direction. What you are seeing is Russian assets being "fixed in place" thinking their trap is working while Ukraine is making the "real" attack somewhere else.