Definition of rolling trench in English:

rolling trench

noun

historical
  • 1A framework on wheels, covered with canvas and painted so as to resemble a mound of earth or parapet, and used as a defence when advancing towards an enemy.

  • 2A parapet or large mound of earth, moved forwards by taking earth from the lower part and transferring it to the top, protecting those behind the mound as they advance towards the enemy.

Origin

Late 16th century.