Stewart Cowley, Spacecraft 2000 to 2100 AD, Chartwell Books, 1978

DETAIL SHOWING MISSILES WITH ANTI-DETECTION GEAR

The illustration here shows an example of this, depicting a troop convoy of these massive ships breaching a line of enemy Watchtowers on Proxima II without the attendance of escorts. Even so they were employed this far forward only because the low gravity of this world would allow them to land even if their gravity-resist generators had been damaged.